Test Fixes - portlet/documentsandmedia
LPS-32449 Reuse existing preferences in the method and no need to send a request as a parameter (necessary for LPS-30300)
LPS-31191 Constants should be in interface and not in helper util
LPS-31191 Don't go back out
LPS-31191 Use implicit var
LPS-32558 Fix Message Boards Portlet undo problem.