added test
fixed test
added ComboBox to DataGrid in WpfTestApplication
fixed extra row bug in DataGrid
fixed failed tests
fixed last test
fixed failing unit test
Fixed .gitignore
Merge pull request #219 from ilya-murzinov/Issue218

Issue 218: Fixed failing unit test
Merge pull request #217 from ilya-murzinov/TestAppModification

Added ComboBox to DataGrid in WpfTestApplication
Merge pull request #215 from ilya-murzinov/ClearDateTest

Clear date test
Merge pull request #220 from ilya-murzinov/GitignoreFix

Fixed .gitignore
Fixing #210 - include xml docs in NuGet package
Updated WebBrowser nuspec
Fixing build