Merge pull request #2 from Eugeny/master

Crosswords
Counters for failed questions and skipped questions added.
Bugs fixing in process..
Merge remote-tracking branch 'eugeny/master'

Conflicts:
	Tester/Views/PracticeCrosswordView.xaml

Updated crossword sizes.
Bug fixes. Line wrapping. Crossword tooltip style.
Merge remote-tracking branch 'anarjell/master'
PracticeCrosswordView.xaml.cs updated afrer merge with Anarjells gist. Implemented horizontal/vertical tabulation through crossword, depends on previous word cell.
Bug fixes.
Icon added, practice VM updated.
Added check for bad correct answers count.
Updated Crossword controls, updated word wrapping.
Deleted old content data.
Fixes