SAK-25709 - uncomplicate colspan, add unified add/action menu

git-svn-id: https://source.sakaiproject.org/svn/content/branches/SAK-25709@306370 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-25709 - move column toggler button closer to table

git-svn-id: https://source.sakaiproject.org/svn/content/branches/SAK-25709@306371 66ffb92e-73f9-0310-93c1-f5514f145a0a