Renamed CSS file and added extra tabs

Renamed CSS file so it's consistent, added tabs for Location and Social
and updated Foursquare icon in Social tab.
Updated description

Added a preview image and updated the readme.md file.
Added link to live example
Fixed tile content line break

Review highlights content was breaking to a new line because it's width
was too big.
Filter by review language

Added dropdown menu for filtering review languages. Needs backend
implementation (include real data for each of the languages).
Finalized language filtering dropdown menu
Merge with master branch