Merge pull request #152 from DBezemer/master

Merge master for M2.7 release
Bump version.php for release and cleanup debug elements
Small fix for frontpage
Bump version for moodle.org triggering
Release 2.7.6
Fix for loading messages when using MSSQL
Release 2.7.6a
Undo edits to these files.
Touch version for 2.7.6a
Sync for release 2.7.6b
Pre-release 2.7.7a
Version 2.7.7
Merge in 2.7.8.
Merge branch 'master' of github.com:gjb2048/moodle-theme_essential into MOODLE_27
V2.7.9
Fix #371.
Refix #370.