Add rake task to install or upgrade gitlab-shell installation.
Add documentation for new rake task to install gitlab-shell.
Fix typo in documentation
Serve a file if in wiki.
Typo fix
Allow nested files in wiki.
Remove redundant signin link from signin page.
Remove empty line.
Add help link to header.
Merge pull request #6897 from cirosantilli/help-every-page

Add help link to header.
Updated CI error message so that it makes more sense
Merge pull request #6906 from agjmills/patch-1

Updated CI error message so that it makes more sense
Merge pull request #6879 from arantir/patch-1

Typo fix
Merge pull request #6892 from cirosantilli/remove-signin-link-front-page

Remove redundant signin link from signin page.
Modify release dates for EE and CI

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'update-release-dates' into 'master'

Update release dates
Merge branch 'improve-gitlab-shell-installation' of https://github.com/pkgr/gitlabhq into pkgr-improve-gitlab-shell-installation

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Conflicts:
	doc/install/installation.md
Fix install docs for gitlab-shell setup rake task

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix gitlab-shell setup rake task

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'pkgr-improve-gitlab-shell-installation'