Handle non string values.

  This fixed badly merged slapos!394, that contained rebased commits

See merge request !394

See merge request !393

    This help for UI tests be a bit translation independent.

   Ensure that the links are present on the side panel.

   Ensure that the attention point works for related tickets waiting for response.

  This follow up renderjs general directive to not use it.

   Do not List Closed Forever Computer on Computer Network view

   Rely on the proper API to exclude cases that aren't shown on the view listbox.

  This makes monitor url, JS agnostic and part of API.
  This also places the real url (bookmarkable) on the gadget link, not requiring to rely on master to redirect.

    The redirects via master is over, now the urls are direct to the Monitor app.

   - Add script to emulare slapgrid work on accessing site as a Computer.

   The access status is now widely used and often fetch in bulk (list of software instances of a computer). Include reference and portal_type gives a hind of which object the message is from, which helps on gadgets and APIs (by reducing the number of fetches for example).

See merge request nexedi/slapos.core!401

   This is obsolete feature before we do have Subscription requests and rapid space.
   Redirect from /trial to panel.rapid.space for legacy purpose, to not break URLs (mostly example).

See merge request nexedi/slapos.core!406

    On a large scale, this slow down and flood full text table w/o any practical use.

See merge request nexedi/slapos.core!403

Also add test for 'slapos register'

See merge request nexedi/slapos.core!404

This will be useful for tests.

We don't need to do the chown as root because we created the file with
root account.

Traceback (most recent call last):
  File "/opt/slapos/eggs/slapos.core-1.7.10-py3.7.egg/slapos/grid/slapgrid.py", line 1435, in processComputerPartitionList
    self.processComputerPartition(computer_partition)
  File "/opt/slapos/eggs/slapos.core-1.7.10-py3.7.egg/slapos/grid/slapgrid.py", line 1329, in processComputerPartition
    raise e
  File "/opt/slapos/eggs/slapos.core-1.7.10-py3.7.egg/slapos/grid/slapgrid.py", line 1254, in processComputerPartition
    local_partition._updateCertificate()
  File "/opt/slapos/eggs/slapos.core-1.7.10-py3.7.egg/slapos/grid/SlapObject.py", line 513, in _updateCertificate
    fout.write(new_content)
TypeError: a bytes-like object is required, not 'str'

Also add test for the failure.

See merge request nexedi/slapos.core!402

  Only get the product image if the user has access to it.

   This allow the internal API, generate upgrade decisions for non public softwares