Remove outdated seeds

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Improve developer seeds

* Improt projects inline so after seeds you have repos
* Fix merge request seeds
* Add comment seeds to both issues and merge requests
* Remove some projects from seeds to increase speed

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'improve-dev-seeds' into 'master'

Improve dev seeds

See merge request !1012