Fix java checker crash, some memory leaks
Fix many memory leaks.
Add a few default java paths on linux
Fix FTB-related issues
Fix for invalid prelaunch commands
Fix library replace issue
Deny april fools outside of first april.
Do not spam logs too much, bump version and add to changelog.
Fix adding icons to custom icon directories.
Get rid of long rebuilds because of minor cmake config changes
Merge branch 'patch-1' of https://github.com/max96at/MultiMC5 into develop
Build fixage for the changed build config
Workaround for dirty build folders.

My disgust just turned into barely contained rage :<
Coverity build and upload target. Also GitFunctions.
.cmake files to reduce "code" duplicate
Merge remote-tracking branch 'origin/feature_dotcmake' into develop
Context menu tweaks

* Add create/copy instance actions to the context menu.
* Context menu for the instance view background.
* Top of the context menu is now a header, fixing the misclick problems.
Add Patreon button. Needs an icon (used I for now).