Fix the blank space below the top header
Silent unused empty blocks

Pick notes: Just had to drop two removed templates. This changes will be
    applied to several other templates in a followup commit.

Conflicts:
	pootle/templates/auth/link_with_evernote.html
	pootle/templates/login.html
Followup: Silent additional unused empty blocks
Nit: Add blank line between extends and load

Minor readability improvement.
Cleanup: Apply the guidelines for template inclusion