Merge branch 'hotfix/0.7.3.1'
Remove existing exports; fixes #271
Bump version
Display managed groups if not member; fixes #480
Add SQLite database; fixes #482
Update translations
Remove double quotes that will be esacped :/
Remove development code
Inject preferences in texts to avoid a global; refs #414
Use mbstring to check encoding
Cleanup
Add travis config file
Add travis config file
Remove globals; refs #414
First add of Unit Tests into Galette; refs #454

Plugins, I18n and Separator are tested, but not with a
100% coverage yet. A README file in tests directory
explain how to run.

A travis configuration file for continuous integration has also been added.
Test on exceptions were failing on travis
Avoid use of a global variable for Members filtering; refs #414
User language was not stored in session; fixes #451
Security : use php 5.5 password_hash instead of md5 to store passwords; fixes #487
Customize travis irc notification to avoid bot fighting