Add a page title to every page.

The page_title helper pushes the provided string at the end of the title, but because of the order that layouts are rendered in by ActionView, the result is always this:

<title from view> | 
<title from as specified in the controller or by its layout> | 
<title from layouts/_head>

For example: Merge Requests | GitLab.org / Gitlab Community Edition | GitLab.

All a developer needs to know is to put a page_title call describing the page in question at the start of every template.

To get everything where I wanted it to go without too much duplication, I had to make some changes around layouts, sidebars and controllers.

Added 18 commits:

• ae96122c...f2cf6d75 - 17 commits from branch master
• 26ad2509 - Add a page title to every page.

Added 2 commits:

• a3bd323c - Remove an old determine_layout call.
• 5121576e - before_action > before_filter.

Bet that felt good.

You better believe it.

Best use of branch name and Internet meme :)

Added 1 commit:

• 280a2124 - Fix Profiles::PasswordsController.

Added 2 commits:

• 635c8611 - Fix snippest sidebar when signed out.
• 4d775915 - Plural instead of singular.

Added 1 commit:

• f7239683 - Include commit message in page title.

Added 1 commit:

• 9508bdc0 - Include ref in network page title.

Added 1 commit:

• 6fcdd150 - Capitalize "Git Access" in page title.

Added 1 commit:

• 0a63c1d2 - Have tree page title read "Files" for root.

Added 2 commits:

• 610ed70f - Humanize help page titles.
• 8c4b6d42 - Set head panel title of help section.

Added 2 commits:

• e0a1d54e - Don't ignore any folder called tags :|
• ae09c2a6 - Capitalize "X" in "New X".

Reassigned to @dzaporozhets

@dzaporozhets A speedy review would be appreciated, because if it waits too long, this MR is bound to get into conflicts :)

Reassigned to @DouweM

Added 1 commit:

• 92fd3cce - Add helpers for header title and sidebar, and move setting those from controllers to layouts.

Added 1 commit:

• a2eee318 - Fix title on user page.

Reassigned to @dzaporozhets

Status changed to merged