Fix dev user seed: multiple ID was used twice.
Use blob local instead of instance.
Disable / hide MR edit blob button if cannot edit.
Add tests for tree edit routes

Critical because of possible confusion between /:id/preview
and /:id for a path that ends in preview.
update order of upgrade guide

GitLab needs to be stopped when backup is took.
Update gemnasium-gitlab-service to version 0.2.3
Added process for green tests

Signed-off-by: Jeroen van Baarsen <jeroenvanbaarsen@gmail.com>
Fixed a lot of already defined notices

Signed-off-by: Jeroen van Baarsen <jeroenvanbaarsen@gmail.com>
Added Code of Conduct

Signed-off-by: Jeroen van Baarsen <jeroenvanbaarsen@gmail.com>
Merge pull request #8447 from jvanbaarsen/added-code-of-conduct

Added Code of Conduct
Merge pull request #8448 from jvanbaarsen/fixed-already-defined-messages

Fixed a lot of already defined notices
Rephrase of the text

Signed-off-by: Jeroen van Baarsen <jeroenvanbaarsen@gmail.com>
Merge pull request #8446 from jvanbaarsen/added-process-for-green-tests

Added process for green tests
add kerberos dependency
Add documentation for the Sidekiq MemoryKiller
Remove unfinished file with the wrong name
transfer error handler
Add link to 'operations' README
Fix random Argument error when update note

In some strange cases Ruby thinks `system` is not AR field but
Kernel.system call and raises exception during save. It should prevent
this random wierd behaviour

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'fix-note-update' into 'master'

Fix note update

In some strange cases Ruby thinks `system` is not AR field but
Kernel.system call and raises exception during save. It should prevent
this random wierd behaviour.

Exception log:

```
ArgumentError (wrong number of arguments (0 for 1+)):
  app/models/note.rb:505:in `system'
  app/models/note.rb:505:in `editable?'
  app/controllers/projects/notes_controller.rb:33:in `update'
```

See merge request !1326