[REFACTORING] #256 Clean admin code

apps/maarch_entreprise/admin/groups/add_grant.php

apps/maarch_entreprise/admin/groups/check_access.php

apps/maarch_entreprise/admin/groups/groups_form.php

apps/maarch_entreprise/admin/groups/groups_list_by_name.php

apps/maarch_entreprise/admin/groups/manage_access.php

apps/maarch_entreprise/admin/groups/remove_access.php

.../maarch_entreprise/admin/groups/usergroups_management.php

...treprise/admin/groups/usergroups_management_controler.php

apps/maarch_entreprise/admin/history/history.php

apps/maarch_entreprise/admin/history_batch/history_batch.php

apps/maarch_entreprise/admin/parameters/admin_parameter.php

...arch_entreprise/admin/parameters/admin_parameter_save.php

apps/maarch_entreprise/admin/parameters/admin_parameters.php

apps/maarch_entreprise/admin/parameters/ajaxMailBoxTest.php

apps/maarch_entreprise/admin/parameters/ajaxSendmailTest.php

...rch_entreprise/admin/parameters/control_param_technic.php

apps/maarch_entreprise/admin/reopen_mail/reopen_mail.php

apps/maarch_entreprise/admin/reopen_mail/reopen_mail_db.php

apps/maarch_entreprise/admin/users/add_usergroup_content.php

apps/maarch_entreprise/admin/users/check_group.php