* data is saved "as is"
* support a source_reference property for "message ID" and like
* no proxy roles.

TODO:
* one script seem enough

So that we can match the web message and the post creating it.

"Restore" sounds a bit strange to me in this context.

This reapplies parts of 9a84ef83 , but a
different server side approach:
 * use portal_workflow API to count worklists
 * introspect workflow to build queries
 * use translated state in the query, trying to be a bit more user
   friendly. We could do for portal_type as well.

This workarounds #20180907-24A654C a problem with queries generated by
gadget worklist does not seem to support complex queries with multiple
values ( local_roles: ['Assignor', 'Assignee'] ). This code generates
queries:

```
( ( local_roles:  "Assignee" OR local_roles:  "Assignor" ) AND portal_type:  "Support Request" AND translated_simulation_state_title:  "Opened" )
```

where the previous version generated queries like:

```
( portal_type:  "Support Request" AND simulation_state:  "validated" AND local_roles: (  "Assignee" OR  "Assignor" ) )
```

which did not match anything. Maybe because local_roles is handled
differently in catalog

This reverts commit 9a84ef83.

Eventhough there's a delay due to cache, the default worklist
implementation is efficient and worklist is translated.

To make it easier to test worklists and dashboard.

SR-15 Crashed! is Opened
SR-16 Boom!  is Suspended
SR-17 Done is Closed

So that ERP5TypeTestCase user is Assignee/Assignor and we can test worklists

Because worklists tests expect to run with ERP5TypeTestCase user, and this test uses another user.

 * Preferences use same icons as other OfficeJS apps
 * Support Request use an "help"/"support" icon

This is not used in this interface

now that we have ERP5 Login, reference is just reference.

Searchable and sortable

now that we have ERP5 Login, reference is just reference.

It was displaying "False" when no requester, display nothing instead.

add reference which was misisng in searchable / sortable
sort in same order as columns + more columns

I made a mistake rebasing & applying the patch to master, so the test
added in
!726 (comment 65067) did not
reach master.

This reapplies this part.

Thanks Seb for noticing !

On the traditional editor (from portal_component), selected text was not
highlighted

This is something the webmaster will define.
Also, initialize available languages like this will select a random
default language, which the webmaster might not understand.

So that a declaration like:
context.getUrlFor({command: 'display_action', options: {jio_key: "document", page: "action_reference"}})
can return the URL to redirect to the given action or the document

/reviewed-on nexedi/erp5!735

Auto-generate cache_id, removing the risk of duplicating one.
Inline getInstanceID as it is its only caller left.
Avoid wrapping if getTransactionalVariable cannot be imported.
Avoid intermediate variables, at the cost of dupicating logic but
accelerating run-time.
Use functools.wraps .
Access _cache_sequence_number directly - these pieces of code are friends
anyway, we already set a volatile property on Catalog instance. Saves one
getattr and one call.

No backslash at EOL.
Avoid splitting messages, to ease code lookup.
LOG's "error" argument accepts a boolean, which removes the need to touch
sys.exc_info.
Use modern exception raising syntax.