Use a __getattr__ like storage proxies do.

This will also be required when the validation proxy of swh-storage is merged,
as this proxy uses __getattr__, so inspect.getmembers() does not return all
method names that can be called.

When a search query does not look like a PID, do not try to resolve it by
sending a request to the dedicated endpoint and directly search for origins.

Closes T1850

Related to T2265

Current implementation of polyfill for document.elementsFromPoint is buggy,
so fix it to avoid js errors in old browsers.

Stop leaking those ids in results from the /api/1/origins/ endpoint.

Remove any reference to those ids in the doc and the code.

Related to T1791

Closes T2250

(and sort alphabetically)

These tests were broken since rDCORE0aaab9cfdb3fc1059f601666b41851e45131db79.

Since Django 2.2, the debug log is polluted by numerous useless messages coming
from the 'django.utils.autoreload' module. So filter them out.

Update sample response to reflect the format updated in elasticsearch 7.x.

Since the upgrade to elasticsearch 7.x in production, the parsing of the total hits
value was failing due to a breaking change in the JSON response format.

Origin persistent identifiers are not publicly resolvable as they are not intrinsic
and for internal usage only.

So raise an exception to get a 400 error code in concerned endpoints.

This fixes the rendering of textual contents when using Django >= 2.x.

The issue was spotted thanks to the cypress tests.

Those tests were broken since rDCORE2255767b9763cefe0841a8d0231f568adcec87ff.

Related to D2522

Fix swh-web execution when using Django >= 2 as some error handler signatures
have changed since Django 1.x

Add a new tox job to build swh-web with latest Django 2.x version.

There is more version mismatch issues, also use djangorestframework-stubs.

It does not contain Python files but rather Javascript and CSS source files
generated by webpack but also fonts and image files. So it seems a better
practice to move this folder at the root of the repository and package it
as module data files when creating a distribution wheel.

Closes T2155

The typing_extensions module from mypy is used since 76480202 so we
need to add it as explicit dependency.

For now, this keeps support for using swh-storage for search, in case
we want to quickly revert to it with no code change. But in the future,
we may want to remove this fallback.

Ensure that all URIs returned in JSON responses of the Web API are absolute (prefixed
with protocol and domains).

That commit consists in:

  - adding a request parameter to our custom django reverse function in order to build
    an abolute URI before returning it

  - providing the input HTTP requests as parameter to reverse in API endpoints implementation

  - centralizing all enrich functions adding URIs in API responses in the swh.web.api.utils module

  - modifying tests implementation to check all returned URIs are absolute

  - adding some new and missing tests related to these improvements

  - modifying enrich function tests to remove hardcoded data in favor of hypothesis

Closes T2154

This currently does not change much, but will be needed to
support swh-search.

Stubbing XHR requests checking latest origin visits and waiting for them
before continuing the tests seems to effectively reduce the long running
times and the high memory usage.

Cypress coverage plugin do not seem to generate the HTML report anymore so add
a npm command to explicitely produce it in CI jobs

Closes T2166