Refactors Page model and extracts slug generation to Sluggable module; closes #9
Replaces all composed_of :dimensions statements; closes #10
Fixes an issue with slug generation
Refactors some helpers and updates Presenter implementation
Refactors route helper to share code between page_path and page_url
Extracts association extensions in Activity to separate modules
refactors FontAwesome::Icon
refactors labelled_icon method
fixes bug in IconHelper
fixes Activity class
fixes an editor link control bug
adds JS generator for I18n files, improves I18n JS API