Null check on phone topic
FIX: now initialises assigned users and correctly assigns them
Added canViewAll for admin users with VIEW_ALL_INBOX permissions
Added canViewAll for admin users with VIEW_ALL_INBOX permissions
Added canViewAll permissions check
Added can view all for Inbox and pending view
Added class responsible for sending out emails
Added junk sender checks before adding message to db
Skeleton retrieve messages from DB. Undecided on message priorities