diff --git a/backend/package-lock.json b/backend/package-lock.json
index 07a6bd9..7ed90a6 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -4,6 +4,28 @@
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   "requires": true,
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+      "resolved": "https://registry.npmjs.org/@types/bson/-/bson-4.0.3.tgz",
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+      "requires": {
+        "@types/node": "*"
+      }
+    },
+    "@types/mongodb": {
+      "version": "3.6.12",
+      "resolved": "https://registry.npmjs.org/@types/mongodb/-/mongodb-3.6.12.tgz",
+      "integrity": "sha512-49aEzQD5VdHPxyd5dRyQdqEveAg9LanwrH8RQipnMuulwzKmODXIZRp0umtxi1eBUfEusRkoy8AVOMr+kVuFog==",
+      "requires": {
+        "@types/bson": "*",
+        "@types/node": "*"
+      }
+    },
+    "@types/node": {
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+      "resolved": "https://registry.npmjs.org/@types/node/-/node-15.0.2.tgz",
+      "integrity": "sha512-p68+a+KoxpoB47015IeYZYRrdqMUcpbK8re/zpFB8Ld46LHC1lPEbp3EXgkEhAYEcPvjJF6ZO+869SQ0aH1dcA=="
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       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.5.tgz",
@@ -130,14 +152,6 @@
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-      "integrity": "sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==",
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@@ -822,6 +836,15 @@
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/bl/-/bl-2.2.1.tgz",
+      "integrity": "sha512-6Pesp1w0DEX1N550i/uGV/TqucVL4AM/pgThFSN/Qq9si1/DF9aIHs1BxD8V/QU0HoeHO6cQRTAuYnLPKq1e4g==",
+      "requires": {
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+        "safe-buffer": "^5.1.1"
+      }
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@@ -876,9 +899,9 @@
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-      "resolved": "https://registry.npmjs.org/bson/-/bson-1.0.9.tgz",
-      "integrity": "sha512-IQX9/h7WdMBIW/q/++tGd+emQr0XMdeZ6icnT/74Xk9fnabWn+gZgpE+9V+gujL3hhJOoNrnDVY7tWdzc7NUTg=="
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.6.tgz",
+      "integrity": "sha512-EvVNVeGo4tHxwi8L6bPj3y3itEvStdwvvlojVxxbyYfoaxJ6keLgrTuKdyfEAszFK+H3olzBuafE0yoh0D1gdg=="
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@@ -1025,8 +1048,7 @@
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-      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
-      "dev": true
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
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@@ -1089,6 +1111,11 @@
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+      "resolved": "https://registry.npmjs.org/denque/-/denque-1.5.0.tgz",
+      "integrity": "sha512-CYiCSgIF1p6EUByQPlGkKnP1M9g0ZV3qMIrqMqZqdwazygIA/YP2vrbcyl1h/WppKJTdl1F85cXIle+394iDAQ=="
+    },
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@@ -1576,7 +1603,8 @@
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@@ -1597,12 +1625,14 @@
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+          "dev": true,
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@@ -1617,17 +1647,20 @@
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-          "dev": true
+          "dev": true,
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           "version": "0.0.1",
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+          "dev": true,
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@@ -1744,7 +1777,8 @@
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@@ -1756,6 +1790,7 @@
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           }
@@ -1770,6 +1805,7 @@
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           "dev": true,
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@@ -1777,12 +1813,14 @@
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           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "2.2.4",
           "bundled": true,
           "dev": true,
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@@ -1801,6 +1839,7 @@
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           "dev": true,
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@@ -1881,7 +1920,8 @@
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           "version": "1.0.1",
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -1893,6 +1933,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
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@@ -1978,7 +2019,8 @@
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-          "dev": true
+          "dev": true,
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@@ -2014,6 +2056,7 @@
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@@ -2033,6 +2076,7 @@
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@@ -2076,12 +2120,14 @@
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           "version": "1.0.2",
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-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "3.0.2",
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@@ -2473,8 +2519,7 @@
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-      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE=",
-      "dev": true
+      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
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@@ -2532,9 +2577,9 @@
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-      "integrity": "sha512-xpDFy8OxkFM+vK6pXy6JmH92ibeEFUuDWzas5M9L7MzVmHW3jzwAHxodCPV/BYkf4A31bVDLyonrMfp9RXb/oA=="
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/kareem/-/kareem-2.3.2.tgz",
+      "integrity": "sha512-STHz9P7X2L4Kwn72fA4rGyqyXdmrMSdxqHx9IXon/FXluXieaFA6KJ2upcHAHxQPQ0LeM/OjLrhFxifHewOALQ=="
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@@ -2558,12 +2603,8 @@
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-      "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
-      "integrity": "sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk="
+      "integrity": "sha512-UejweD1pDoXu+AD825lWwp4ZGtSwgnpZxb3JDViD7StjQz+Nb/6l093lx4OQ0foGWNRoc19mWy7BzL+UAK2iVg==",
+      "dev": true
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@@ -2585,6 +2626,12 @@
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       "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
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+    "memory-pager": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/memory-pager/-/memory-pager-1.5.0.tgz",
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@@ -2665,40 +2712,47 @@
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+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.6.6.tgz",
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-      "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-3.1.0.tgz",
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-        "bson": "1.0.9",
-        "require_optional": "1.0.1",
-        "saslprep": "1.0.1"
+        "bl": "^2.2.1",
+        "bson": "^1.1.4",
+        "denque": "^1.4.1",
+        "optional-require": "^1.0.2",
+        "safe-buffer": "^5.1.2",
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-      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-5.2.7.tgz",
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-        "lodash.get": "4.4.2",
-        "mongodb": "3.1.1",
-        "mongodb-core": "3.1.0",
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+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-5.12.7.tgz",
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+        "bson": "^1.1.4",
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-        "mpath": "0.4.1",
-        "mquery": "3.1.2",
-        "ms": "2.0.0",
-        "regexp-clone": "0.0.1",
+        "mpath": "0.8.3",
+        "mquery": "3.2.5",
+        "ms": "2.1.2",
+        "regexp-clone": "1.0.0",
+        "safe-buffer": "5.2.1",
+        "sift": "13.5.2",
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+        }
       }
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     "mongoose-legacy-pluralize": {
@@ -2707,18 +2761,19 @@
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-      "resolved": "https://registry.npmjs.org/mpath/-/mpath-0.4.1.tgz",
-      "integrity": "sha512-NNY/MpBkALb9jJmjpBlIi6GRoLveLUM0pJzgbp9vY9F7IQEb/HREC/nxrixechcQwd1NevOhJnWWV8QQQRE+OA=="
+      "version": "0.8.3",
+      "resolved": "https://registry.npmjs.org/mpath/-/mpath-0.8.3.tgz",
+      "integrity": "sha512-eb9rRvhDltXVNL6Fxd2zM9D4vKBxjVVQNLNijlj7uoXUy19zNDsIif5zR+pWmPCWNKwAtqyo4JveQm4nfD5+eA=="
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-      "resolved": "https://registry.npmjs.org/mquery/-/mquery-3.1.2.tgz",
-      "integrity": "sha512-rBo2+eShI/Ko/GFzXMvJvYjzeLRW3P7E4NllAGRyNO90Xw5awo5RI3zCqzuJWe1NSvdL7cGu3RPLuGjZ1TmnmA==",
+      "version": "3.2.5",
+      "resolved": "https://registry.npmjs.org/mquery/-/mquery-3.2.5.tgz",
+      "integrity": "sha512-VjOKHHgU84wij7IUoZzFRU07IAxd5kWJaDmyUzQlbjHjyoeK5TNeeo8ZsFDtTYnSgpW6n/nMNIHvE3u8Lbrf4A==",
       "requires": {
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         "debug": "3.1.0",
-        "regexp-clone": "0.0.1",
+        "regexp-clone": "^1.0.0",
+        "safe-buffer": "5.1.2",
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@@ -2829,6 +2884,11 @@
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+      "resolved": "https://registry.npmjs.org/optional-require/-/optional-require-1.0.3.tgz",
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       "resolved": "https://registry.npmjs.org/optionator/-/optionator-0.8.2.tgz",
@@ -2954,8 +3014,7 @@
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-      "dev": true
+      "integrity": "sha512-MtEC1TqN0EU5nephaJ4rAtThHtC86dNN9qCuEhtshvpVBkAW5ZO7BASN9REnF9eoXGcRub+pFuKEpOHE+HbEMw=="
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@@ -3107,9 +3165,9 @@
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-      "integrity": "sha1-p8LgmJH9vzj7sQ03b7cwA+aKxYk="
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/regexp-clone/-/regexp-clone-1.0.0.tgz",
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@@ -3205,20 +3263,6 @@
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@@ -3259,19 +3303,22 @@
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@@ -3330,6 +3377,11 @@
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