#5 adding room detail view
 - adding graph data and calculating that in RoomsDAO
 - added simple get method in room dao
 - refactoring client js code - services simplified to follow REST to
   the letter
 - removed map refs from angular js files to avoid client side errors
 - renamed most of Rest and DAO methods to match rest (get, query, save)
 - amended test for RoomsDAO and css too