This is what I think 28f8db51 was supposed to do.

With the initializer in an "unless Rails.env.production?" block
the entire initializer was being ignored in production mode and
loaded in all other environments, but Rails Admin was still
loading regardless of that. 

This only loads rails admin in production and excludes it from
all other environments. Also keeps non-admins out of /admin_panel
(without the initializer it was free-for-all) and temp fixes #3210
until a new gem is released.

adding 'debugger' gem to Gemfile [ci skip]

defer the optimistic loading of profile wallpaper and title (at least wait until the call stack is emptied) [ci skip]

eagerly call isotope before images are loaded; optimistically assume wallpaper is in the cache until we actually fix the issue [ci skip]

Conflicts:
	Gemfile.lock

was failing in development

Fix new publisher if user is beta

Reshares delegate nsfw to the root post

Use Markerb for emails

Update federation logger

fixes #3120

sad panda.  selenium web driver had to update, and clearly some of the behavior around send_key changed :(

* Add markerb to the Gemfile
* Update mailer classes to send multipart text+html emails
* Simplify all email templates and convert to Markdown+ERB

This required stripping the CSS and images from the emails. All
Markdown templates are based on the original HTML version except
for the inviter, where it was much easier to work with the text
version (and the i18n contains the whole message anyway).