Some doc update.
small uml diagram update
typo
Merge branch 'master' of https://github.com/claroline/CoreBundle into doc
Merge pull request #109 from ngodfraind/doc

Doc
Fixing text edit form.
Added IF EXISTS in some postgres migrations files
Fixing bad request.
Merge pull request #125 from ngodfraind/bugfix

Bugfix
Merge pull request #124 from kitan1982/fix-bugs-postgres-migrations

Fixed migrations bug for postgres
Removing authentication exception.
Merge pull request #126 from ngodfraind/bugfix

Removing authentication exception.
Documentation Update
Fixed stat controller bugs
Merge pull request #128 from stefk/stat-bugs

Fixed stat controller bugs
Merge pull request #127 from solispauwels/master

Documentation Update
close claroline/Claroline#289
User & group list are filtered by search in new message form. Closes claroline/Claroline#373
Merge branch 'master' of https://github.com/claroline/CoreBundle into issue-373-send-message-selection
Merge pull request #131 from easy-es/user-profile

close claroline/Claroline#289