Improve WidgetSlot.checkClick(). Simplify MenuActionBAr logic. Add tooltips for keyboard navigation.
add back else if
Fix MSVC compiler warnings
checkClick() is already called from checkMenu()
Fix array out of bounds
Do value rounding in proper way
Merge pull request #648 from igorko/master

Improve WidgetSlot.checkClick(). Simplify MenuActionBar logic. Add tooltips for keyboard navigation.
FileParser: better error reporting
FileParser: clear error flags before reading a new file
EnemyGroupManager: remove ending / to have it working in Windows

Fixes 646.
Thanks @igorko and @RyanDansie for spotting and testing the bug.