Selection background color is now consistent across context menu
and menubars.
Don't change the cursor to 'pointer' in context menus on hover.
Change-Id: I25d1fcba113f2c27a8ab6d028244afd75c28cd59
But use a whitelist to not show items/uno commands that
correspond to opening a dialog. Whitelist is limited as of now,
but can be extended easily to include more commands to the
context menu as required.
Change-Id: I3ff8cf722d395aa643d512c98db41ebeee0a95d1
