Working JAX-RS Jersey Servlet Java & Login/Registration

# Java
- connection to `proj-309-M14.cs.iastate.edu/REST/app`
- working uris:
  - `/login` - Authenticates and logs in from database
  - `/createUsr` - Creates user from database

# Javascript
 - Login and Register functionality
 - Added MPD stream info to New Connections in the Profile Modal
 - Toggleable visibility in New Connections