original work by @Ruxton
rebased and extended to include feedback from the original PR #3959

Include missing javascript in bookmarklet, regression introduced in commit ffc6c110. Fixes #4057

* Re-add flash warning to registrations mobile
* Remove excess :css
* Fix littles css errors

Issue #3976: Send a profile update alongside a sharing notification

* Dropped all references to Resque
* Moved all jobs under app/workers since that's the Sidekiq convention
* Renamed Jobs module to Worker to match new location
* Adapted all jobs to Sidekiq
* Replaced all enqueue calls with perform_async
* Dropped Resque hacks from specs and features, replaced with
  sidekig/testing in RSpec and sidekig/testing/inline in Cucumber
* Updated scripts to start a Sidekiq server
* Inline Sidekiq sinatra app
* Let Sidekiq create the actual Redis instance
* Workaround already initialized constant warnings in service models
* Resolved ToDo in one job definition by creating proper exception clases
  for some errors in receiving posts
* Added sidekiq section to configuration to make it completly
  configurable to the user
* Add Sidekiq middleware for clean backtraces
* Delay HttpMulti retry to give offline pods a chance to come back up
* Do not retry on GUID already taken and alike errors
* Be graceful about deleted posts in GatherOEmbedData

* Rename and reorganize post fetcher to fix autoloading, also let it use
  Faradays default connection so we get nice redirects
* Add initializer to load libs at a central place
* added lib dir to autoload_once paths to increase thread safety
* Moved lib/exceptions.rb to lib/diaspora/ to conform namespacing

* Complete the existing: Post mobile.
* Complete some test for no mobile: Edit profile, Post main.
* Fix little error css and js mobile.
* Add file-upload-custom javascripts to mobile.js.

If post has photos, always include url in post to Facebook to stay consistant with other servies, fixes #3706

refactor create comment method