IP adress displayed in UI and automatic login

Added a parsing class to hide some output from the user and respond
to it automatically. For instanceon start up the program
 can now tell whether or not root is logged in, and log in
automatically. It also retrieves the display module's IP address
and displays it on the UI.

Note, the documentation only partially reflects these changes.
Parsing mode with automatic login and UI updater

The new parsing mode does not display serial port output to the
user, but parses it with regexes for patterns. Based off the
patterns found it can now log in automatically and send the
IP adress to the UI.

Note, documentation does not reflect all changes.