Users backend

[theofidry]

Related to #50.

Ansible

• Removed JWT from Ansible install
• Fixed install of git-autocomplete
• Fixed install of symfony-autocomplete
• Fixed default editor: Vim is properly used instead of nano
• Symfony bash aliases are now valid outside of the project directory
• Removed useless files permissions fix as Vagrant+VirtualBox set fix permissions for now
• Fixed path used for database install process

  Application

• Fixed some code style errors
• Removed useless doctrine annotations
• Removed useless PHPDoc
• Refactored the declaration of the database for the test environment
• Removed PHPUnit logs from default config file and added a travis specific config file

  Features

• Installed a new bundle to integrate a Guzzle client with logs in profile bar
• Rework of the interface of the ApiClient and the ApiClient implementation
• Started to implement the User entity