Conflicts:
	app/views/dashboard/projects.html.haml
	app/views/layouts/_head_panel.html.haml
	config/routes.rb

Editable notes

Couple of UI additions

fixed nav bar for empty repos (fixes #4375)

Conflicts:
	app/controllers/admin/teams/projects_controller.rb
	app/views/team_members/_team_member.html.haml
	app/views/teams/members/_member.html.haml

Adding detailed documentation of the markdown syntax.

Closes #4331

Closes #4424

This includes standard markdown as well as GitLab extended markdown as well as references to documents used.

Create uploads dir otherwise backup fails. Fix #4304