Drop right side bar, move content to left side bar

Move user avatar and name from the left nav bar to the left of the publisher

* move presenters back to controllers, this is view-logic
* use PostService in CommentService
* remove iframe route, this is not used anymore
* id/guid limit at 16 chars, hex(8) is 16 chars long

- Extract JS from HTML
- Remove search link on message
- Remove duplicated invitation modal

closes #6279

closes #6193

closes #6117

Please see https://github.com/diaspora/diaspora/issues/5483#issuecomment-109277476 (+5 squashed commits)
Squashed commits:
[62f38a6] Wrap all handlers with document.ready()

Also add the copyright at the top of the file.
[e861587] Split up show_comments handling

Currently there are two classes that have the
class show_comments. I renamed one to
"back_to_stream_element_top" as it is responsible
for scrolling the user all the way up to the top
when clicked. The other which toggles the
reactions will remain as "show_comments".
[a8dbc4e] Remove unused "cancel new comment" action
[db575cc] Move comment related js to mobile_comments.js
[de44f81] Move add comment container to new comment partial

Also can't use quoted keys there yet because of Ruby 2.1

Fix hash syntax 3

Fix hash syntax 1 and 2

correcting images display on stream sidebar

Corrections on profile page

- move mobile icons to mobile-folder, so they aren't included in the
  icons-sprite
- move logos to branding/logos, and create a logos-sprite without the
  big other branding-images
- delete duplicate images

closes #6004

Since the Facebook API has changed and additional permissions are required for all users on a pod to cross-post, an additional 'authorized' flag is needed to be set for the Facebook service.
This flag allows either all users, one user or no users to use the cross-posting service.

Clarifies the situation for #5923, #5260 and #5085.

closes #5985

* snippet now in a separate JS file - compiled and uglified with the other assets
* popup gets centered in opening browser window
* publisher gets pre-filled with markdown-styled content