SAK-26340 the hide/show columns jquery ui dialog not appearing above rest of gb content


git-svn-id: https://source.sakaiproject.org/svn/gradebook/trunk@310251 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-22814 unlabeled checkboxes in hide/show columns


git-svn-id: https://source.sakaiproject.org/svn/gradebook/trunk@310253 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-22813 fix All Grades rendering with the three buttons. This is a Gonzalo patch!


git-svn-id: https://source.sakaiproject.org/svn/gradebook/trunk@310254 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-22806 two images needed empty alt text


git-svn-id: https://source.sakaiproject.org/svn/gradebook/trunk@310255 66ffb92e-73f9-0310-93c1-f5514f145a0a