Add in the UI the checkbox for the access rights migration

Change-Id: I471be8aef02e78fb652627ef93f1b1038db6b8b9
Access rights are not migrated if the checkbox is unchecked

Change-Id: I2c6bfcf1b12287a484df5984475d9e58a29a5e2d
the checkbox keeps its value after redirect

Change-Id: I6d15f1f120b230c8fe99b4943bb4a13fd71ba4f4
Add info in system event UI if access rights are not migrated

Change-Id: I8b85fc31ff218589d8ca2f95fd5d582fe64df8f0
Merge remote-tracking branch 'gerrit/3636_disable_permission_setting_when_I_migrate_a_repository' into tuleap-stable-master

* gerrit/3636_disable_permission_setting_when_I_migrate_a_repository:
  Add info in system event UI if access rights are not migrated
  the checkbox keeps its value after redirect
  Access rights are not migrated if the checkbox is unchecked
  Add in the UI the checkbox for the access rights migration

Change-Id: Ib3a7c306523ace438c43faccd3869cf0af0815e0
Tuleap 6.3.99.4

Change-Id: I1d6be6686f4d30a5f4458bf43c0a922f9ba8d701