Merge branch 'ci-and-ce-sitting-in-a-tree-k-i-s-s-i-n-g' into 'master'

Merge CI into CE First step of #2164. - [x] Merge latest CE master - [x] Make application start - [x] Re-use gitlab sessions (remove CI oauth part) - [x] Get rid of gitlab_ci.yml config - [x] Make tests start - [x] Make most CI features works - [x] Make tests green - [x] Write migration documentation - [x] Add CI builds to CE backup See merge request !1204

Merge branch 'ci-and-ce-sitting-in-a-tree-k-i-s-s-i-n-g' into 'master'
cccd269d · Kamil Trzcińśki · 7d59ba00 · ac8d2eb0 · cccd269d · cccd269d
Commit cccd269d authored 9 years ago by Kamil Trzcińśki
--- a/spec/support/gitlab_stubs/user.json
+++ b/spec/support/gitlab_stubs/user.json
--- a/spec/support/login_helpers.rb
+++ b/spec/support/login_helpers.rb
--- a/spec/support/setup_builds_storage.rb
+++ b/spec/support/setup_builds_storage.rb
--- a/spec/support/stub_gitlab_calls.rb
+++ b/spec/support/stub_gitlab_calls.rb
--- a/spec/support/stub_gitlab_data.rb
+++ b/spec/support/stub_gitlab_data.rb
--- a/spec/tasks/gitlab/backup_rake_spec.rb
+++ b/spec/tasks/gitlab/backup_rake_spec.rb