SAK-25709 - added visible label for the add/actions combo dropdown control, just the caret was too subtle

git-svn-id: https://source.sakaiproject.org/svn/content/trunk@307645 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-25709 - change default padding only to the add/actions combo dropdown control

git-svn-id: https://source.sakaiproject.org/svn/content/trunk@307646 66ffb92e-73f9-0310-93c1-f5514f145a0a