minor updates & formatting changes

minor updates @ formatting changes to match other versions of file.
Unify formatting of
https://github.com/gitlabhq/gitlabhq/blob/master/lib/support/nginx/gitlab,
https://github.com/gitlabhq/gitlabhq/blob/master/lib/support/nginx/gitlab-ssl,
&
https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/files/gitlab-cookbooks/gitlab/templates/default/nginx-gitlab-http.conf.erb
make repo name link to repo homepage
Merge pull request #8273 from bbodenmiller/nginx-updates

Nginx updates
Version 7.6.0.rc1
Merge pull request #8107 from bbodenmiller/patch-16

Make project title link to project homepage
Merge branch 'master' of github.com:gitlabhq/gitlabhq
Revert "Version 7.6.0.rc1"

This reverts commit 280822cd379a7b7d3790f1546d677e14b700d2d1.
Revert "Create dev fixture projects with fixed visibility"

This reverts commit a9fadce361163e97eb1de0ec62e4235ff0fa3daa.
HipChat service: correct service name

HipChat refers to their own product camel cased so we should do the
same.
HipChat service: default to v2 API

HipChat no longer recommends people use the deprecated v1 API so switch
to using the v2 API by default. hipchat-rb does not yet default to v2 in
any version so it must be specified.
HipChat service: support custom servers

HipChat allows users to run their own private servers and to be able to
support those we must connect to the correct URL when using one of these
custom servers.