Refactor: IDEA-100655 confirmation for removing non-version files bug.

*Move checking if deleted file is unversioned file in needToConfirmDelection override method.
*Change skipUnversionedAndNotUnderHg method to just skipNotUnderHg.
WI-16614 Darcula theme highlighting of selected element/s
Merge remote-tracking branch 'origin/master'
WI-16614 Darcula theme highlighting of selected element/s