Squad

* frontend:
* display "Not submitted and" "Not fetched" is list of test jobs
* core:
* admin: List test counts for ProjectStatus
* add 'xfail' to default test statuses
* ci:
* lava: avoid extra request when fetching results

* api:
* add regressions and fixes to ProjectStatus
* add test for api/knownissues/ endpoint
* allow for filtering with substrings
* change pagination for some views
* fix KnownIssuesViewSet filter fields
* fix TestJobFilter to allow TestRun relation
* speed up API UI for builds
* core:
* add counter for tests with status xfail
* cache `Status.has_metrics`
* notification: avoid duplicate notifications
* notification: ensure metadata is sorted
* ProjectStatus: make test count fields default to 0
* rename KnownIssue.environment to `environments`
* tasks/RecordTestRunStatus: reduce code duplication
* Test: record xfail when matching any active known issue
* doc: added docs on REST API
* frontend:
* add indication of unfinished builds
* allow substring searches in compare test view
* allow users to subscribe/unsubscribe to email notifications in a project
* build: improve column widths in test results table
* build: make "details" URL parameter independent of selection order
* build page: also expand details when clicking suite name
* display known issues across the UI
* download: handle packages without a top-level directory
* fix 500 when accessing nonexisting build testjobs
* fix links to test run details
* fix `test_run.html` after changes to templatetags
* present regressions and fixes in the build list
* redesign build page for speed
* `test_run`: remove `<small>` from UI
* add tests to cover all basic URLs

* frontend:
* add shortcut to latest finished build
* add compare test page with dynamic content
* api:
* allow for baseline selection with build/<id>/email API
* add Suite endpoint
* make API web frontend more responsive
* add pagination to `test_result` route
* add `full_name` to project
* ci:
* admin: list testjob creation timestamp
* make sure test job is marked fetched
* core:
* Build: check expected test runs even with CI jobs

* frontend:
* improve footer wording
* Group testresults by suite and env in build page
* api:
* add Test object and more filtering options
* core:
* ProjectStatus: cache test run counts. This provides a large speedup to the
project page.
* ci:
* lava: fix case when LAVA fails to provide `error_type`

* core:
* ProjectStatus: correctly handle 0 `expected_test_runs`
* detect changes from 'fail' to 'pass'
* frontend:
* add SVG badge as separate view
* api:
* add endpoint for PatchSource object
* make all 'id' fields read-only
* expose 'finished' flag to Build
* ci:
* lava: prevent password leaking in error messages
* scripts:
* add squad-config script for managing external config

This release provides the proper artifacts for SQUAD 0.46