Add commit statuses reports on pull request view (#6845)

* Add commit statuses reports on pull view

* Add some translations

* improve the UI

* fix fmt

* fix tests

* add a new test git repo to fix tests

* fix bug when headRepo or headBranch missing

* fix tests

* fix tests

* fix consistency

* fix tests

* fix tests

* change the test repo

* fix tests

* fix tests

* fix migration

* keep db size consistency

* fix translation

* change commit hash status table unique index

* remove unused table

* use char instead varchar

* make hashCommitStatusContext private

* split merge section with status check on pull view ui

* fix tests; fix arc-green theme on pull ui

models/fixtures/repository.yml

@@ -118,7 +118,7 @@
   is_private: false
   num_issues: 0
   num_closed_issues: 0
-  num_pulls: 0
+  num_pulls: 1
   num_closed_pulls: 0
   is_mirror: false
   num_forks: 1
@@ -496,4 +496,4 @@
   num_stars: 0
   num_forks: 0
   num_issues: 0
-  is_mirror: false
+  is_mirror: false