Honor email_always even if notification has been read

Even if the notification has been read, send it by email if user has enabled email_always
Added test to ensure email is sent to users with email_always set even if the notification has been read
Corrected typo, corrected accidental tab, removed unnecessary database rollback

Corrected it "do send" to it "does send"
Removed unnecessary user.update_column (rollback happens automatically)
Replaced Tab with spaces.
Allow a sepearate mobile logo URL
Forgot translation for description
Allow to pass commit hash to tester
Optimisations to docker test script
bad style
oops should be HEAD
Cosmetic changes.
Add post_id to user_badges table.
Add ability to specify custom font awesome icon for badges.
Allow specifying URLs as badge certificates.
Mark badge notification as read when the notification is clicked.
Use Em.computed.match.
Add missing <tbody> tags.
Add notification_id column to user_badges.
Move badge grant_count updating to the UserBadge model callbacks.
Grant system badges in a background job.
Add like-based system badges.