refactoring
 * costumes and sounds need no seperate options menu
set title for action mode
remove rename from script options menu
 * hide item
 * check for current fragment in ScriptActivity
test if option menu items are gone for ScriptFragment
 * rename, delete, showDetails
test that context menu doesn't show up on active ActionMode
create method to check if context menu appears
 * difference between rename and delete ActionModes
fix bug concerning context menu while active ActionMode
 * caused crash