StandardPanel has been added. Categories and icons was added as well.
Merge remote-tracking branch 'remotes/origin/CategoriesProtoImplementation' into LibraryPrototype_StandardPanel

Conflicts:
	src/DynamoCore/UI/Views/LibraryView.xaml
Standard Panel height was fixed.
Sorry Height, not Heigth
Property CopyToOutputDirectory removed.
TODO comments added.
Members for ClassDetails now adds by using public methods.
Event handlers for StandardPanel renamed using next sample OnXyzXyz.
LibraryWrapPanelWidthConverter removed, using BoolToVisibilityConverter.
preprocessor #if added
Removed LibraryView LOCAL, BASE, REMOTE .xaml
Merge branch 'Sitrus2' into LibraryPrototype_StandardPanel
LibraryView.xaml has been formatted.
Removed excess <DefineConstants> from DynamoCore.csproj
Removed SPVisibility and commented code
Merge pull request #2135 from vmoyseenko/LibraryPrototype_StandardPanel

Library prototype standard panel