[master] Add PhpStorm IDE repertory to gitignore
[master] Abstract object manager, no direct impact
[master] Update configuration so that object manager must be mentionned in config.yml

[master] Super fix
[master] Update README for agnostic object manager feature
[master] Update configuration with default value for object manager for backward compatibility
Merge pull request #38 from lxark/feature/agnostic-object-manager

Make the TranslationForm object manager agnostic