Print a tree of file names instead of a pretty-printed JSON object.
It is better because the full JSON object can overload the browser.

It contains two modules, Computer Metadata Snapshot and Computer Trusted Metadata.

Computer Metadata Snapshot's purpose is to store serialized (JSON) documents generated by
https://lab.nexedi.com/nexedi/metadata-collect-agent

Computer Trusted Metadata's purpose is to store serialized (JSON) documents generated by
https://lab.nexedi.com/nexedi/software-metadata-crawlers

It also contains a test that can ensure the Contribution Predictate for .metadata files is working correctly.
The intended behavior is that all files that end with the .metadata extension end up within the
Computer Metadata Snapshot module.

Computer Metadata Snapshot has a preliminary view that displays the JSON document in a TextArea.

At the end of test result, we calculate the sum of test result line
retries and set it as a property on test result. Listbox will then
show for each test result line the number of retries. Problem is
that we did not set retry count property on test result lines which
were not retried, so they acquired this from the parent test result.

To prevent this, always set a retry count property on test result
and set it to 0 when they are not retried.

In 4bcf5c6a (CatalogTool: Introduce new dynamic related key syntax, 2017-07-25)
we introduced a new syntax to solve some ambiguities in the previous syntax, but
the test suite was still testing the old syntax only.

Update tests to test the new syntax and to also check the old legacy syntax.

Previously available at https://nexedi.erp5.net/web_page_module/3487.

So that it can be registered properly on load and later added through the ZMI.

ZODB Components: Tool Component: Only validated 'reference' must be considered when registering a Tool.

Otherwise setting an invalid reference will make the Component 'modified' but
try to use that invalid reference to register it and fail.

With chrome ( 85.0.4183.108 but I think it appears a few weeks/months ago )
when using erp5_xhtml_style when the cursor in the first column on the left
it's not visible, because the bold background hides it.

Default user agent spreadsheet is a 2px padding, but we have a rule applying a
padding 0 for all textarea. Revert this rule for textarea used as fields in
content.


---

## before:

The cursor is in *Description* field, left to "This style is ..." but cannot be seen.

![image](/uploads/f40262af196d799291643604b91ae2c4/image.png)


## after:

The cursor is same location (*Description* field, left to "This style is ...") and this time is visible.

![image](/uploads/bf1ec63532e2eca1fca7655a4581935a/image.png)

See merge request !1280

See merge request !1282

Previously this would be rendered as empty String
(unless we had a hidden field to define precision)

Commit adds also testListboxZeroValue in  erp5_web_renderjs_ui_test

See merge request !1173

See merge request !1262

Add a new document in the history while trying to show its latest state

Use this command on the module's list and worklist, to come back to the expected page when done on a module.

ZODB Components: There is no need for `description` and `source_reference` to be RecordedProperties.

* Not considered for `modified` state (dynamic_class_generation_interaction_workflow).
* `source_reference` sets only once at import from filesystem.