- use of interfaces instead of implementations
- rename of String id in method actionSetPartAssociations
-use of !isEmpty() instead of size()>0
-use of final static String for "ActionSet", "scheme:menu",
"scheme:toolbar", "after=", "after=additions", "/", ".groups"
-remove unused IEclipseContext in constructor
-remove commentend code
-removing not thrown CoreException in method evaluate() of class
ActionSetAndPartEXpression

adapting changes in extending class ViewAction

Change-Id: If6b999e9b5b695040d06d16b1a478eae2545b46f
Signed-off-by: Manuel Niquet <m_niquet82@yahoo.de>