* Add repo type option to /api/repo/search

* Add tests and fix result of collaborative filter in specific condition

* Fix/optimize search & tests

* Improve integration tests

* Fix lint errors

* Fix unit tests

* Change and improve internal implementation of repo search

* Use NonexistentID

* Make search api more general

* Change mirror and fork search behaviour

* Fix tests & typo in comment

* Fix and remove FIXME

* Respect membership visibility

* Fix/rewrite searchRepositoryByName function

* Add unit tests

* Add integration tests

* Remove Searcher completely

* Remove trailing space

* Remove redudant functions and code

* Add more repo search tests

* Fix repo search tests

* Always test returned repos length

* Add test with lower pagesize limit (test more pages)

* Add and fix /api/repo/search integration tests

* Simplify unit tests code

* Simplify and unify integration tests code

* Improve test coverage

* Temporary fix tests due to bugs in current repo search implementation

* Revert removing not nil Searcher

* Add more checks to tests

* Simplify privacy checks in /api/repo tests

* Temporary remove privacy check from repo search tests

* Add collaborative repositories to the dashboard

Remove some unused code from the Dashboard func

* fix some bug and some refactor

* fix tests