removed close button from login
Added back button to login instead of close
Removed extra unames and modal stuff
Rewrote signup to work; Added some redirects for already logged in users;
Added signup view
changed findJob to findJobByUser & messages_key to messages; rewrote job handler;

findJob was finding by user_id, but now we also sometimes might need to find by job_id
messages_key is unncessary, we can just store an array of messages directly in the job document.
right now it's acting as a single string though.
redid job to only look up the job by user_id from session instead of getting user and then job.