Merge branch 'hotfix/0.4.1.1'
Added classes to the body for easier page specific styling.
Paginate contacts
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
Commit the new branding sprite
let default sidekiq config actually process the maintenance queue