Put From and To in Segment
Fixed serialization
Show From and To in segments
Added vertical hand movement
Merge branch 'master' into SplitSegment

Conflicts:
	RowAnimation/RowAnimation/MainWindow.xaml
Resolved merge conflicts
Split works for recover also
Split of Stroke segments now uses CustomCommand
Don't need the CommandParameter in the context menu
Prepare for About dialog
Recover segments use Xommand
Refactoring of Split functionality
Refacteoed XAML for Split menu
Implemented Join command in Context menu
Fixed some problems with Join and added check if Join can be performed on Segment
Added top menu for Segments
Merge branch 'master' into SplitSegment

Conflicts:
	RowAnimation/RowAnimation/MainWindow.xaml
	RowAnimation/RowAnimation/MainWindow.xaml.cs
Fixed several bugs in Split/Join