i think this works.  there is some weird stuff in vannacontroller, but that might have always been there

Fix Issue #991: RTL SASS Stylesheet 

Conflicts:
	app/controllers/users_controller.rb
	config/locales/diaspora/en.yml
	db/schema.rb
	spec/controllers/users_controller_spec.rb
	spec/mailers/notifier_spec.rb

Fix for issue #1600: Missing string for translation ("Recent notifications")

This reverts commit a6f2f82c.

fixed emails to show avatars, have subject lines that allow threading in email clients, and relevant content previews

Update of Galician (gl) translation

Had forgotten to use the right string delimiters (not needed, but hey, I want to do things right\!).