Merge pull request #24 from jjageneau/master

tooltip for the video description
Cleaning db/access.php
Merge branch 'master' of github.com:chdemko/moodle-mod_elang
bouton check ameliore
Merge pull request #25 from fmiloudi/master

Bouton check améliore
Cleaning locallib.php
Merge branch 'master' of github.com:chdemko/moodle-mod_elang
interface modification
Merge branch 'master' of https://github.com/chdemko/moodle-mod_elang
modification sequence
Merging with code base
Merge pull request #26 from tlebigre/master

Modification sequence
Merge branch 'master' of https://github.com/chdemko/moodle-mod_elang
add Head.js