moving spaces is now undoable and redoable
setup undo and redo when moving a description
undo and redo when resizing a space via marking control or with mouse

added tolerance level to make sure a command doesn't get added
when a space or description gets clicked and nothing has changed
added edit menu item that contains undo and redo
avoided adding extra commands to the undo redo stack
Add volume changing setting
Merge branch 'master' of github.com:IMDC/LiveDescribe-Desktop

Conflicts:
	LiveDescribe/LiveDescribe/Resources/UiStrings/UiStrings.resx
Set volume on test start
Re-arrange methods
update the selectedspace startinvideo and endinvideo for undo and redo
Merge branch 'master' of github.com:IMDC/LiveDescribe-Desktop into valdev