Fix D&D, RTL 'side-pre' / 'side-post' block rendering sides, layout usage with RTL / LTR and 'report' layout with having 'side-pre' converted to 'side-post' in RTL on settings page when no 'side-post' issues.
Fixes and additional bug I found on CONTRIB-4597

https://tracker.moodle.org/browse/CONTRIB-4597

If the fixedstudent flag is set, and the edit mode is turned on, the
rows are off by 2-3 every 50 rows in the grader report. Off by a full row
after the first ~11 rows.
Fixes an additional bug I found on CONTRIB-4597

https://tracker.moodle.org/browse/CONTRIB-4597

If the fixedstudent flag is set, and the edit mode is turned on, the
rows are off by 2-3 every 50 rows in the grader report. Off by a full row
after the first ~11 rows.

As always, this comes with a disclaimer that I'm not a theme designer. The below fix seems
to work for me, but please use at your discretion.

*Additional commit needed to fix missing semicolon.
Merge pull request #68 from gjb2048/master

Fix D&D... etc... as asked.
Bump version number
Merge branch 'master' into ESSENTIAL_254
Merge pull request #69 from martygilbert/CONTRIB-4597

Fixes an additional bug I found on Contrib 4597
Merge branch 'master' into ESSENTIAL_254
Remove $contentclass
Merge branch 'master' into ESSENTIAL_254
Merge branch 'ESSENTIAL_254' into ESSENTIAL_254_BFC