remove html from emails, as it is driving me crazy
Merge branch 'hotfix/0.4.1.1'
Added classes to the body for easier page specific styling.
Paginate contacts
update notifier helper spec expecatations to redcarpet 3.2
Maintenance feature to remove old users

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.
Fix issue #4416

Conflicts:
	spec/helpers/notifier_helper_spec.rb
Merge pull request #5347 from AugierLe42e/markdown-strip-404

Fix issue #4416
Merge pull request #5288 from jaywink/remove-old-users

Maintenance feature to remove old users, scheduled in settings
Added files in .gitignore
Merge pull request #5352 from AugierLe42e/gitignore-adds

Added files in .gitignore
Reword account removal email notification
Add header logo when hoovered (white logo)
Clarify explanation of account deleteion process
Merge pull request #5359 from goobertron/ac_close_text

Ka-BOOM! Fixes #5358
LibreJS should work with most of the site
Merge pull request #5320 from zikalify/librejs_headers

Librejs headers
Added more LibreJS support
change x11 to expat license
Merge pull request #5365 from zikalify/librejs_headers

Librejs headers