-Alt text to image was set to hash, which would make the page display hashes if the image/gravatar  wasn't available, set the alt text to '', and made the main tool bar image follow the same or similar constraints as the other images (.avatar, .s26)

Conflicts:
	app/assets/stylesheets/themes/ui_bb.scss
	app/views/snippets/_snippet.html.haml

Change-Id: I42e1e86f535486fd2556d4b3e4591f3676eea033

Rename unspecified to make it clearer and in line with scrum terminology

fix bad constant reference in `project_routing_spec.rb`.

whitespaces in gitlab.yml.example

Add missing assigned_to renaming to merge_requests_load_context

we should not use `console.log` in production code...

Notify email to mentioned users; show participants ala github on issuables

Database seeding failing

[Doc] Update 5.0 to 5.1: Recompile assets

Fix wrong file versions in update docs (5.2 to 5.3)

add db index for authentication_token column in users table

Conflicts:
	doc/install/installation.md

Recompiling assets on the update is needed or main menu appearance may not load properly. This has been mentioned on issues #3722 and #3978.

The command has been tested several by users on those issues and by myself.

Thanks for your time and attention.

fixes #4360.

Remove unused but slow code

Fix paths to the Contents Markdown pages

Scrum view style milestone view.

Fix spelling error and make sure you never log in as git user so you never have to logout to run sudo.