Bug 529135 - [Layers] test regeneration with style field in cssInstance

- added style apply and unapply support
- switched all the packages to internal
- update the priority of the Layer tabs

Change-Id: I842cab7437a9c895b53d86b88f9c6b4c2a2e08f1
Signed-off-by: Quentin Le Menez <quentin.lemenez@cea.fr>
107 files changed