Fix broken unit tests.
Update version and readme for the 1.3 release.
Improve styling to match MDL-39420.
Improve styling to match MDL-39420.
Merge branch 'MOODLE_24_STABLE'

Conflicts:
	styles.css
Multiple choice question choice alignment issue. #8423

The problem was with the alignment of:
* tables inside the choices.
* Lists inside the choices.
* The specific feedback, when it spanned mulitple lines.

The problem was introduced by #7172.
Merge branch 'MOODLE_24_STABLE'
Update version.php for the 1.4 release.