Added mustache precompiling with grunt-contrib-hogan

[MOD]gruntfile hogan task
[MOD]requirejs_app added hogan path
[MOD]app/index.js added vendor script hogan
[MOD]_package.json added grunt-contrib-hogan
[MOD]_bower.json added hogan 3.0.2, contains all builds
[MOD] all views updated with template.render hogan method
[MOD] passing templateFramework in views/index.js so we can decide how to render
Merge branch 'hogan' of https://github.com/erikmajlath/generator-backbone into hogan