[1.2.0] aeroo_ooo breaks parent_left/parent_right computation

With aeroo_ooo installed but the connection to the ooo service not configured (or configured but the service is down),
when you install new modules, the coputation of the fields parent_left and parent_right for the registers they load is not done.
This makes some menu entries not appear (eg, the one for the connection wizard launcher if you didn't setup the connection properly the first time you install aeroo_ooo) and prevents you from assigning parents to objects who follow a hierarchy (eg: Partner Tags under Sales->Configuration->Address book)

How to reproduce:
- Create an empty db, install aeroo and aeroo_ooo. Do not configure the ooo connection
- Install more modules. Some menus will not be shown.
- To check which are the missing menu entries run this query
   select parent_left, parent_right, name from ir_ui_menu where parent_left is NULL;