Fixup Gemfile

- properly link to cupsffi
- upgrade to latest rails version
remove active record references

- rename print server’s primary key to id (was hostname)
- initializer follows active_record convention
Introduce home page
Use objects instead of hash

- introduce toner class
- move converter into own class (cups_translater)
- move components into own partials
Add a few more attributes to the toner
Trim Gemfile

add pry, remove a few others