Force cached updater binary to always resolve as stale
Log version, work paths
DEBUG: Add some logging for instance loading.
Notifications system. Mainly to be used in case the updater breaks.
Fix for pre-Qt5.2
Don't try to check for notifications if we don't have a URL for it
Add the option to disable a certain message
Explicitly set the close button to be the default button
Fix mod list checkboxes
Fix library column stretching
Merge branch 'develop' of github.com:MultiMC/MultiMC5 into develop