Port to Qt5

[s8321414]

Please port to Qt5, Qt4 will be EOL soon 😄

[strelec]

Now it really is EOL.

[chaitan94]

+1 Currently this is the only program which uses Qt4 in my machine.

[rparkins999]

rparkins999/sqliteman release 1.8.1 (which I'm just in the middle of uploading) builds and runs with Qt5, and contains many improvements.