Cleaned up CSS and JS path names.
The Weizen SVG is now in a more appopriate spot too.
Views have now more appropriate names.
Broke the sinatra routes into separate files.
The app configuration is now a global module.
Created a separate templates/ folder.
Merge branch 'ps.rework_folder_structure'

A lot of the functionality is now broken up into sub folders. For
example, the configuration is now handled by helpers/settings.rb. The
sample files have been moved in their own new templates/ folder.