Removing the attribute meta generator as it is not used
Removing unnecessary dependency for UserFormType
Removing findGroup() from user manager
Adding group manager
Adding group repository
Removing usage of $form->bind() in ProjectController as it is now deprecated
Fixing phpdoc
Adding group event dispatcher
Fixing event names for groups
Updating GroupManager to fit with abstract manager design
phpdoc fix
Adding group event objects and updating group event dispatcher
WIP for group management
Merging conflicts