Allow MySQL configuration from an URL (from config file or environment)
Use travis mysql configuration for test
Minor syntax fixes and master rebase
Merge pull request #967 from franckstauffer/master

Minor dependencies changes
Merge branch 'config_mysql_from_env' of https://github.com/Soulou/Change into Soulou-config_mysql_from_env
Connections infos fetched earlier
Merge branch 'Soulou-config_mysql_from_env'