This reverts commit 5a586f36

This reverts merge request !3191

Now that we're serving assets directly from the Gemojione gem's path,
the images are not in an `emoji/` sub-folder.

Add the `read_build` ability if user is anonymous or guest and allow_guest_to_access_builds is enabled.

Closes https://github.com/gitlabhq/gitlabhq/issues/9844

Closes #3559

- Enable CI by default for all new projects

Changed the authentication method for removing fork through API
Reflected changes to new auth method in API specs

This was previously possible through the API but can now be done
through the project#edit settings screen if the current user is
the owner of the project.
Update changelog

Notifications button was unavailable if user wasn't member of the
project, even if protected project is available via group privileges.

Showing disabled button with explanation tool-tip is less confusing.

This closes #2846.

Notification dropdown now shows currently active level, and also shows what the actual value of `global` is, if the project has the notification level set to global.

- Split up SnippetsController into separate dashboard and explore sections.
- Use consistent page titles, header titles and sidebars between dashboard and explore sections when signed in or not.