Fixed margins for members
More fixes
Removed top and bottom margins of Category content
Height of not top category is made 32
Added margin in top and bottom of ItemsHost
Renamed class for converter tests
Tests are added
Merge branch 'Sitrus2' into DUI-MarginsFix
Merge branch 'DUI-MarginsFix' of https://github.com/vmoyseenko/Dynamo into DUI-MarginsFix
Fixed a couple small bugs
Simplified LibraryTreeItemsHostVisibilityConverter
Children are collapsed during expanding of parent
Merge branch 'Sitrus2' into DUI-MarginsFix
Reverted missed tests
EOF on new line
Curly brackets are added
Merge pull request #229 from vmoyseenko/DUI-MarginsFix

Margins change
Merge pull request #240 from vmoyseenko/DUI-CollapseNextLevelItems

Children should be collapsed during expanding of parent