Refactored user feeds as lists on the feed itself
Fix email validation to not be case sensitive
Return an error if user that appears to be logged in is invalid
Retrieve feeds by username
Query feeds from user object
Fixed issues with adding feeds for a specific user and filtering for only
that user's feeds
Don't store unread count on feed itself - we will get the unread count per
user
Maintain list of active client connections
Store multiple connection ids for each user