Bump django from 2.1 to 2.2.24 in /server

server/requirements.txt

@@ -4,19 +4,42 @@
 #
 #    pip-compile --output-file server/requirements.txt server/requirements.in
 #
-attrs==18.1.0             # via botany-connectfour, botany-core, botany-noughtsandcrosses
+attrs==18.1.0
+    # via
+    #   botany-connectfour
+    #   botany-core
+    #   botany-noughtsandcrosses
 botany-connectfour==0.1.1
+    # via -r requirements.in
 botany-core==0.9.0
+    # via -r requirements.in
 botany-noughtsandcrosses==0.1.0
-click==6.7                # via rq
+    # via -r requirements.in
+click==6.7
+    # via rq
 dj-database-url==0.5.0
+    # via -r requirements.in
 django-dotenv==1.4.2
+    # via -r requirements.in
 django-rq==1.2.0
-django==2.1
+    # via -r requirements.in
+django==2.2.24
+    # via
+    #   -r requirements.in
+    #   django-rq
 gunicorn==19.9.0
+    # via -r requirements.in
 psycopg2-binary==2.7.5
-pytz==2018.5              # via django
+    # via -r requirements.in
+pytz==2018.5
+    # via django
 raven==6.9.0
-redis==2.10.6             # via rq
-rq==0.12.0                # via django-rq
+    # via -r requirements.in
+redis==2.10.6
+    # via rq
+rq==0.12.0
+    # via django-rq
+sqlparse==0.4.1
+    # via django
 whitenoise==4.1
+    # via -r requirements.in