Fixes a few links and typos, and reorganizes the CI "Create a backup"
section.

I don't really like making these an ordered list since they're mutually
exclusive, but I think the structure is what's important.

[ci skip]

[ci skip]

Remove CI help

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/2556

See merge request !1325

Move partial locals out of controller

Some minor cleanup for upload/replace functionality: move controller variables into partial locals.

See merge request !1331

add repository field to issue hook data

Integrate CI navigation more tightly with project

![Screen_Shot_2015-09-17_at_09.51.56](https://gitlab.com/gitlab-org/gitlab-ce/uploads/013807ad9f89a35a4af988199c2ee92f/Screen_Shot_2015-09-17_at_09.51.56.png)
![Screen_Shot_2015-09-17_at_09.52.14](https://gitlab.com/gitlab-org/gitlab-ce/uploads/8f9bdaafeef62fa451ee3699f003cbc4/Screen_Shot_2015-09-17_at_09.52.14.png)
![Screen_Shot_2015-09-17_at_09.52.07](https://gitlab.com/gitlab-org/gitlab-ce/uploads/cb726bf0651ddb74c10fd7bae9a333fb/Screen_Shot_2015-09-17_at_09.52.07.png)

/cc @dzaporozhets

See merge request !1324

The controller_path includes namespaces, where controller_name only includes the class name without controller

Fix schema downgrade introduced by: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/1299

Fixes: https://dev.gitlab.org/ci/projects/1/refs/master/commits/2e9a7032cec02588484eb162717298d311770c7d
Introduced by: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/1299

See merge request !1326

Remove CI cronjob during migration

See merge request !1329

Create a "destroyed Milestone" event and keep Milestone events around in the DB for posterity

Also fix issue where destroying a Milestone would cause odd, transient messages like "created milestone" or "imported milestone".

Now if a milestone is destroyed, at least it will indicate in the activity feed even if it's not clear which milestone was destroyed:

![image](https://gitlab.com/gitlab-org/gitlab-ce/uploads/c89cc8a0a9fa549deac433f17b890913/image.png)

Closes #2382

See merge request !1227

Enable SSL by default

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/1135

See merge request !1299

Fix 500 on CI project settings

Fix: https://gitlab.com/gitlab-org/gitlab-ce/issues/2546

/cc @dzaporozhets

See merge request !1321

Fix displaying public projects

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/2552

See merge request !1318

Restrict users API endpoints to use integer IDs

Closes #2267

See merge request !1156

Fix HTML link that was improperly escaped in new user e-mail

### Before:

![image](https://gitlab.com/stanhu/gitlab-ce/uploads/e42e73f04971d8dd949b034846d2bb9f/image.png)

### After:

![image](https://gitlab.com/stanhu/gitlab-ce/uploads/90425911345031a4b8e9374323728f79/image.png)

Closes https://github.com/gitlabhq/gitlabhq/issues/9640

See merge request !1323

Closes https://github.com/gitlabhq/gitlabhq/issues/9640

See merge request !1306

add a test for to_hook_data of issue model

update CHANGELOG

Add missing proxy requests to migration docs

See merge request !1317

Change 7-14-stable to 8-0-stable in doc/install/installation.md

Also fixes sudo user from previous MR.

[ci skip]

See merge request !1320

[ci skip]

[ci skip]

Fix 7.14 to 8.0 update guide

[ci skip]

See merge request !1319