Correct mattermost smtp configuration

There is a mistake in the mattermost doc that makes it quite hard to get smtp working.

See merge request !571

Always ask node for the attributes, reload node hash after setting new values.

Fixes #1004 

See merge request !570

Cron tasks

Fixes #992 

See merge request !569

Use example.com to be consistent with rest of the docs



See merge request !567

Increase default worker memory

The idea of increasing the default worker memory has been thrown around a lot recently. With the increase in the number of support requests we've seen with workers being killed often due to memory settings, it makes sense to consider this now.

I doubled the min/max from 250MB to 512MB. I also adjusted the logic for determining default # of workers so that we don't overrun a instance's RAM. 

cc/ @marin @jacobvosmaer What do you think about changing this for 8.3? If double is too much we can also consider something like 384MB.

See merge request !561

Service address for mattermost.

Fixes #912

See merge request !559

Mattermost v1.3.0.

Fixes #989 

See merge request !566

GitLab Pages support for Omnibus

This adds `pages_external_url` which allows to enable GitLab Pages.

This adds `pages_nginx` section for nginx configuration.
The configuration model is the same as for `nginx` and `mattermost_nginx`.

/cc @jacobvosmaer 

See merge request !565

Revert "Store pages in shared/pages/fqdn/fqdn/public or shared/pages/fqdn/subpath/public - makes it simpler to implement CNAMEs in future"

This reverts commit b52ef766.

Store pages in shared/pages/fqdn/fqdn/public or shared/pages/fqdn/subpath/public - makes it simpler to implement CNAMEs in future

Pass all requests through gitlab-workhorse



See merge request !562

Openssl version to 1.0.1q.

Fixes #979 

See merge request !558

Fix wrong level of headings



See merge request !557

Use dynamic issue-ref in issue closing pattern.

Required for https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/1933.

See merge request !556