* Add info about list endpoints to CONTRIBUTING.md
* Let all list endpoints return X-Total-Count header
* Add TODOs for GetCombinedCommitStatusByRef
* Fix models/issue_stopwatch.go
* Rrefactor models.ListDeployKeys
* Introduce helper func and use them for SetLinkHeader related func
This module is merged from https://github.com/go-gitea/git which is a Go module to access Git through shell commands. Now it's a part of gitea's main repository for easier pull request.