Remove dead code, cater for nullable opinion values
Class for computing sentiment distribution on a 5-point scale
Background picture for the app
Rename dictionary keys to fit changes made to db column names
Update css to support app background
Update to display more statistics
Add column to display distinguishing feature
Display quick statistical summary on landing page
Change polarity range used for Solr queries
Rename dictionary keys to match db column names
Update main view file with logic to show distinguishing feature and stats on hotel details page