It might be not needed, as the sync will be reimplemented

By using pattern r'push.*undef' files has been selected, and for each obvious
place error handling has been delegated to global error handling system and all
places found with silent catching errors has been marked with XXX-catchall with
optional explanation.

It's a workaround for issue in monitor resulting with infinite recursion after
clicking delete button.

Thanks to not starting backend separately, the test became much simpler
and shall be easier to run and check.

Use Zope's access rule in the folder in order to set headers for OPTIONS
method too and also to avoid having ? in the backend URL.

Having WebPage_viewAsWeb in default skin selection break other sites
relying on default behavior of erp5_web.

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

This reverts commit 35b2c024c2b6fb33271d949b4529e1bf75e94585.

Allow edition in the new UI

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

Keep compatibility with existing officejs tests, by keeping the
data-i18n attributes, even if useless.