* Fix issue #6847

* Contact: auto-follow-back
* Shareable: create share visibilities

* add port to pods
* remove url from person and link people with pod-table

Adds welcome message on registration Welcome message is only send out if podmin account is defined and welcome message is enabled in the config.

This also enables the podmin account to send messages
to any local user.

closes #6128

closes #5967

Add #clear_account! disable mail spec

Add migration for disabling mail for all closed accounts

Change migration to use #update_all for disable_mail attribute

Add #clear_account! false fields spec

Add Sidetiq webview to the Sidekiq monitoring panel

Add rake task maintenance:queue_users_for_removal
This basically just triggers an immediate run of the normal maintenance remove old users functionality that is normally (if enabled) scheduled to run once a day via sidetiq

Add extra safety when checking for user removal due to inactivity.
Now also user.last_seen will also be checked to make sure a user will not be removed in the event that the Devise rememember me login functionality has stopped the users remove_after timestamp from being removed.

Add initializer for maintenance job.
Add warning about mail being disabled if remove_old_users maintenance is enabled.

Thanks to Josias for the hint

Adds a timestamp to user model which is touched when user comes back. Statistics active users counts now use these more reliable timestamps. Fixes #4734

Add mobile signup page captcha. Add test for user.sign_up method. Rewrite simple_captcha views to haml. Revert .rvmrc, fix indentation in config examp$

Statistics route with general info, some user and total posts stats. By default statistics off, enabled in settings.

Use a blacklist approach instead of a blacklist approach in Profile#receive.

Remove attr_accessible from models and make specs pass.

Fixing example config file

Updated changelog

* 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