Fix #3378

* Fix SSH auth LFS locks

* Activate SSH/lock test

* Remove debug

* Follow @lunny recommendation for AfterLoad method

Fixes #3383.

Otherwise we're still presenting ourselves as GogsServer...

In #3377, I put check inside all write key function. This one is useless no.

* Force-push to base repo's ref/pull/#/head

Fixes force-pushing to pull request branches, otherwise failing with:

[...gitea/models/pull.go:1022 AddTestPullRequestTask()] [E] PushToBaseRepo: Push: exit status 1 - To /path/to/gitea-repositories/org/repo.git
 ! [rejected]        issue-fix -> refs/pull/20/head (non-fast-forward)

* format

* Change how merged PR commits and diff are made

* Update code.gitea.io/git dependency

* Fix typo

* Remove unneeded local variable

* comment

* Update source installation requirements

We require Golang 1.8 since we use `net/url.PathEscape` which was not introduced until then

* Use Golang 1.8 for build and test

If we state Golang 1.8 we should test using that version as well

* Use golang 1.8 only for single build to see if everything compiles

* Change back edge also for commented out sqlite test

* test: integration add git cli tests

Extracted form for easing review process and debug #3152

* test: integration add git cli big file commit

* fix:  Don't rewrite key if internal server

* Fixes API-Endpoint release (#3005)

* Using context.ReferencesGitRepo(); doing the same in the PATCH route.

* Add release create, get and update test

* Populate repo indexer in background

* Check if no repos exist

* race cond

* General refactor of the cmd package

* Address breakage in runCreateUser

* Place "common" functions into cmd.go

Now includes all the template hooks in the page, and a detailed
example for the common case of adding an "about" page.

* Remove hardcoded paths to fix randomly failing tests

* Use correct function for merge path

* Replace all ctx.Handle with ctx.ServerError or ctx.NotFound

* Change Handle(403) to NotFound, avoid using macaron's NotFound

These templates add content to the top navbar
and to the repository page.
This way we do not have to copy and modify the whole
template, and re-modify it after upgrading Gitea if
it changes.

Signed-off-by: Alberto González Palomo <bugs@sentido-labs.com>