Allow creating new characters

NOTE: At the moment everybody shares all characters.
Allows minification of javascript

This refactors the javascript in such a way that minification is
possible.
Refactors character creation layout

This moves the character list to the left, and displays the creation
form more clearly.
Adds the secure headers gem

This will prevent a series of security issues, amongst others by only
allowing resources on the page from the same protocol as the page is
viewed in (e.g. http or https).
Allows updating a character

It's possible to update the characters name.
Note that all characters are still shared.
Adds a link and allows to create new characters
Changed to backbone
Switch to rails

Allows simple management of characters. This also allows the user
access via twitter.
Allow simple administration of characters
Adding honeybadger