Merge branch '21764-build-page-title' into 'master'

Remove project_title additions from builds and environments

## What does this MR do?

Removed soon-to-be un-needed project title additions from builds and environments.

**This MR depends on !5998, which introduces subnav to these pages. Without it we're just removing a useful link.**

## Are there points in the code the reviewer needs to double check?

@iamphill Is this right of me? One of these still exists in `projects/artifacts/browse`, I'm not sure whether to fix the issue with `project_title`, which already has some issues with its chevron, or just remove it as it will soon be redundant.

## Why was this MR needed?

## Screenshots (if relevant)

**BEFORE:**

![Screen_Shot_2016-10-27_at_14.58.22](/uploads/2915289fb06603c33d1abbcdab70c962/Screen_Shot_2016-10-27_at_14.58.22.png)

**AFTER:**

![Screen_Shot_2016-10-27_at_14.58.29](/uploads/ad8574aeaa6771737bb9002d749b5559/Screen_Shot_2016-10-27_at_14.58.29.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Closes #21764

See merge request !6160

CHANGELOG.md

@@ -51,6 +51,7 @@ entry.
 - Fail gracefully when creating merge request with non-existing branch (alexsanford)
 - Fix mobile layout issues in admin user overview page !7087
 - Fix HipChat notifications rendering (airatshigapov, eisnerd)
+- Removed unneeded "Builds" and "Environments" link from project titles
 - Remove 'Edit' button from wiki edit view !7143 (Hiroyuki Sato)
 - Cleaned up global namespace JS !19661 (Jose Ivan Vargas)
 - Refactor Jira service to use jira-ruby gem

app/helpers/projects_helper.rb

@@ -49,7 +49,7 @@ module ProjectsHelper
     end
   end
 
-  def project_title(project, name = nil, url = nil)
+  def project_title(project)
     namespace_link =
       if project.group
         link_to(simple_sanitize(project.group.name), group_path(project.group))
@@ -66,10 +66,7 @@ module ProjectsHelper
       end
     end
 
-    full_title = "#{namespace_link} / #{project_link}".html_safe
-    full_title << ' &middot; '.html_safe << link_to(simple_sanitize(name), url) if name
-
-    full_title
+    "#{namespace_link} / #{project_link}".html_safe
   end
 
   def remove_project_message(project)

app/views/projects/artifacts/browse.html.haml

 - page_title 'Artifacts', "#{@build.name} (##{@build.id})", 'Builds'
-- header_title project_title(@project, "Builds", project_builds_path(@project))
 
 .top-block.row-content-block.clearfix
   .pull-right

app/views/projects/builds/show.html.haml

 - @no_container = true
 - page_title "#{@build.name} (##{@build.id})", "Builds"
-- header_title project_title(@project, "Builds", project_builds_path(@project))
+- trace_with_state = @build.trace_with_state
 = render "projects/pipelines/head", build_subnav: true
 
 %div{ class: container_class }

app/views/projects/environments/_header_title.html.haml

-- header_title project_title(@project, "Environments", project_environments_path(@project))