Merge branch 'release/0.7.6' into develop
Add attachments to mailings; fixes #187
Add some new tests
Travis configuration: activate PHP 5.5, try to test with postgres and mysql
Typo in db name
Mysql script creation from travis
Use exising parameters to test constructor with DSN, since it check for database connection
Add SQLite travis configuration
Alter will not work as expected with SQLite
Remove globals on Preferences; refs #414
Add unit tests on Preferences; refs #454
Try to initialize db content on first load
Fix unit tests issues with postgres
Add a param not to clean expired passwords, add unit tests
Some changes on pasword generation; refs #731
Another check on passwords unit tests
Fix table size
Fix undefined index
Merge branch 'hotfix/0.7.6.1' into develop

Conflicts:
	galette/includes/galette.inc.php
Force integer values for charts; fixes #742