LDAP code from EE

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

Allow underscore as the first char for project names.

[6.6] Fixes a bug with group member administration

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

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

Group owners were not able to remove any users from their group if they were the only owner.

Catch missing commands in Rake tasks

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

Remove Dot Org

Add envrc to git-ignore

Respect custom gitlab_shell path in gitlab:gitlab_shell:check task

Natural version sorting

Add Enterprise Linux

Increase Nginx Push Size

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

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

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

Fix now-invalid invocation of `run_and_match` in gitlab:check

Fix grammar in zero_authorized_projects view

Must have been left over from a previous revision, but the argument
wasn't used anywhere in the method.

This was causing the gitlab:check task to exit prematurely with the
error "System commands must be given as an array of strings."

Prior to this change, if I customized the config value of
`gitlab.gitlab_shell.path`, the check would ignore this value in favor
of `"~<gitlab.gitlab_shell.ssh_user>/gitlab-shell/"` resulting in a
failed check when the configuration was otherwise valid.

Correct typos in web_hooks help.

Sort projects by activity at group show page

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

Fix Discover Branch

Fixes #1073