Change prefix of application to /wordnet on production
Add ajax http interceptor for custom prefix
Add relative url root to angular configuration
Change root url in application.slim template using app prefix
Use ui-sref link to respect custom prefix
Use ui-sref also for main logo
Add link to http://plwordnet.pwr.wroc.pl/wordnet/msr
Change link to link directly to nlp site
Merge branch 'master' into develop

Conflicts:
	app/assets/javascripts/application.coffee
	app/views/home/index.slim
	app/views/layouts/application.slim
[WIP] Graph interface