This reverts commit 42f37e39.

This prevent getting DB read/write conflicts

Do not access form submission REQUEST from the listbox list method,
as it is rendered asynchronously in ERP5JS

Allow edition in the new UI

This make everything slow as hell and prevent to quickly save.

/reviewed-on nexedi/erp5!1002

- indent the json representation of error
- if error is an XMLHttpRequest:
  - include the server side error response in an iframe
  - split response headers

/reviewed-on nexedi/erp5!981

/reviewed-on nexedi/erp5!1004

erp5_project does not depend on erp5_budget, so instanciating project
cell fail unless erp5_budget is installed.

Project Cell are not used by default, so it's still a bit unclear, but
with erp5_budget we can directly define budgets by project / project
lines in a more flexible (but also more complex).

Project Line uses OrderLine, so it's consistent to use OrderCell for Project Cell.


/reviewed-on nexedi/erp5!980

erp5_trade_ja: 軽減税率8% tax line in summary must always be present (official specification) but is not used in Nexedi so hardcode it.

erp5_trade_ja: AttributeError was raised when default_image (to display logo at the top left) was not defined.

- views/actions meant for officejs should use "object_jio_x" categories to avoid conflicts with erp5js
- using object_jio_search instead of common object_jio_view because the base form for rendering depends on the category (form_list, form_dialog, form_view, etc)
- changes are also in bts officejs_jquery_app and officejs_ooffice

- do the calculations while officejs router set settings

speedup

 - run `testXHTML` on business templates "one by one"
 - fix all the problems with the currently tested business templates
 - because `erp5_ingestion` was containing some tests skin folder depending on other business templates and because I did not want to add dependencies to `erp5_ingestion` I moved the tests in `erp5_ingestion_test`.

/reviewed-on nexedi/erp5!989

Some document subobjects have a workflow, and so, can be only be deleted from some state
If the listbox does not display them, do not add the state filter parameter

This skeleton became cloudooo several years ago and we don't need this
here anymore.

/reviewed-on nexedi/erp5!966

Note that Set type setter still keeps the default one if exists.

/reviewed-on nexedi/erp5!862