Added LoadingDialog as a 'loading screen'
Moved some methods from Utils to UIUtils
Finished up ModManagementDialog
Reworked UI instantiation, several tweaks

Most of the dialogs are now instantiated as needed and disposed of as
soon as they're done with, as opposed to keeping them alive and
refreshing them, which was the case previously
Added enum entries for new hotkeys, plus radius
Added a call to update the anchor's bounding...

...area after deleting an object
Implemented the SettingsDialog
Logging and cleanup tweaks
Added automatic update check