MDL-47556 quiz: autosave should default to on for new installs
Merge branch 'MDL-47556' of git://github.com/timhunt/moodle
MDL-46481 backup: Ensure one-click backup is not displayed on restore
Merge branch 'MDL-46481-master-fixup' of https://github.com/FMCorz/moodle
MDL-43089 quiz editing: fix RTL

As part of this, I tweaked the LTR style a bit, in a way that is both an
improvement (I hope) and also to reduce the amount of RTL-specific code
required. (Thanks to Fred for spotting some of the problems.)

Also, I changed one course style in boostrapbase, where the RTL rule was
different from the LTR rule.

Finally, I saw some repeated RTL rules in the quiz styles.css, and so
eliminated the the duplicate rules.
MDL-43089 quiz editing: fix some qbank popup JS issues.