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

This must be from manual edit of business templates files.

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

This is essential to have better aesthetic of Deepdiff diff for tuples.
In general, we treat iterables as long string so as to bypass the complicated
diff for iterables provided by DeepDiff, but for tuples this was creating a
problem as it was not possible to understand the diff properly.

Hence, by soting them, we get more understandable diff for tuples.

Also, there is no need to override `__diff_tuple` function as it is itself
dependent on `__diff_iterable` which we already override.

Following convention, it makes more sense to use view mode for DiffTool view.
Also, we don't need selection as of now.

Also, update the tests

View wise, the date and path for new version/obvject should be on right side which
in our case is `your_second_date`. Thus, the case where we run diff action on single
object, the right side should show the current version and the left side shoule show
the last version.

/reviewed-on nexedi/erp5!741

/reviewed-on nexedi/erp5!748

/reviewed-on nexedi/erp5!739

/reviewed-on !740

zope.conf default encoding is also used for responses and converters, so
for consistency we should also force default encoding there.
This is especially useful when running tests, because zope.conf is not
used and default values are used.

https://tools.ietf.org/html/rfc4329#section-7 states that text/javascript is obsolete.

Doesn't really matter in the end because WebPage_viewAsWeb forces the content type.

In HTTP/1.1 , when not specified , charset detault to ISO-8859-1

https://tools.ietf.org/html/rfc2616#section-3.7.1

> media subtypes of the "text"  type are defined to have a default charset value of "ISO-8859-1" when   received via HTTP

Zope adds a charset with default encoding (
https://github.com/zopefoundation/Zope/blob/2.13/src/ZPublisher/HTTPResponse.py#L512-L515 ) but does this only for text/ type, but we serve our javascript as application/javascript

Correctly handle multiple interface declarations

Reduce DOM modification.

Load gadget in an iframe to improve isolation

Delay gadget creation to prevent creating hundred of iframes in parallel, which slow down the browser

Prevent submitting the form if the relation field contains an unknown search string.