Extracted Player fields into a partial for both Player#new and Player#edit, also updated the navigation to use the Helpers::Session methods, and added Helpers::Form#form_http_verb to set the hidden field in forms.

Users can now log in and out, and update their settings, assuming they are logged in and have a password an email that matches that of the record they want to update.

Couldn't get the bootstrap glyphicons to work, we are using email addresses as primary IDs which looks a bit shitty, and theres definitely some refactoring to be done.

Moved RSS builder logic into PlayerRssFeed.