After upgrades and changes in the project, the skin could be removed by the upgrade of slapos_web bt5

The upgrade of those few bt5 don't need to be launched on activities, specially because this script is manually invoked before the upgrade be launched.

On certain scenarios, like the erp5_core has to be initially upgraded in separated transaction.

Else it will drop changes from slapos_jio.

This prevents be redirected to another object when you click on the document.

Only few UI improvements

This code is present on erp5 repository, and "me" already comes with the request for person, instance and computer, so it is not required to wrapper.

Include minimal test to ensure code is consistent.

getTitle relies on acessors, it would not return "" but the id (revert as it introduce a regression)
use a diferent append on generateNewId on the test for this bt5

  Include SlapOSTestCaseMixin on portal_components and update the tests to use
  it instead directly use SlapOSMixin from SlapOS Product