Beginning to look at user-similarity in javascript
Created matcher model to match users!
Put artists and genres in database, with join table
Genres load! Yeah!
Matcher has more methods
Artist and Genre matches get sorted by the minimum frequency

* so if I have 10000 taylor swift songs and you have 10, it returns 10
* then the result is an array of arrays, sorted by the number
* Also added helpful methods to get the top X (defaults to 3)
Refactored like crazy! In the matcher. It's all less redundant now.
little clean-ups
Merge branch 'UserComparisons'

Conflicts:
	app/models/user.rb
	app/views/home/index.haml
	db/schema.rb