This is follow-up for 56c66ee486 allowing admin
to see private repositories, even when not being member of them.

This change fixes the output from /{{ username }}.keys so that it can work in
a ~/.ssh/authorized_keys file

- fix delete user but repository watches are not decreased

This is a balance between speed and nice code, where speed has won. To prevent a repository query for each action the ownername is match with the current user.

It would be "cleaner" or "better" if we fetch the repository each time. Another option is to add the RepoOwnerID to action

This commit does a lot of the work of refactoring the access table in a table with id's instead of strings.

The result does compile, but has not been tested. It may eat your kittens.

This commit does a lot of the work of refactoring the access table in a table with id's instead of strings.

The result does compile, but has not been tested. It may eat your kittens.

Conflicts:
	modules/setting/setting.go

Conflicts:
	templates/repo/release/list.tmpl
	templates/user/dashboard/dashboard.tmpl

Conflicts:
	routers/repo/setting.go