Indexed search of repository contents (for default branch only)

* Improve issue indexer

* Fix new issue sqlite bug

* Different test indexer paths for each db

* Add integration indexer paths to make clean

* Fix test : make coverage -> test

* Refactor integration tests to be able to run them in parallel

* Add custom local repository temp path

* Hotfix for integration testing

* Comment sqlite tests because of database locking issues

* fix collborators lack of units on orgnization repositories

* also change log level to debug

* Fix activity feed

Preserve actions after user/repo name change

* Add missing comment

* Fix migration, and remove fields completely

* Tests

* MySQL, Postgres integration tests in drone

* Fix .drone.yml

* sign drone

* resign drone

* Integration test framework

* udpate drone sign

* Formatting fixes and move router.go to routers/

* update sign for drone