remove common area calculation

src/Data.js

@@ -32,30 +32,14 @@ class Flat {
         return room ? this.sizeShared / this.numPeople * room.numPeople : 0;
     }
 
-    // Calculates the share of the project wide common area
-    // the party has to pay for.
-    // Currently done by number of people in the party.
-    calcCommonAreaShare(room = null) {
-        var numPeople;
-        if (room) {
-            numPeople = room.numPeople;
-        } else {
-            numPeople = this.numRooms;
-        }
-
-        return commonArea / numPeopleTotal * numPeople;
-    }
-
     // Calculates the total area the party has to pay for
-    // Includes the private area, share of the common area and for
-    // WGs and clusters the share of the internal shared area
+    // Includes the private area and if applicable share of 
+    // the internal common area of WGs and cluster flats
     calcTotalPayedArea(room = null) {
-        var commonAreaShare = this.calcCommonAreaShare(room);
-
         if (!room) {
-            return this.sizePrivate + commonAreaShare;
+            return this.sizePrivate;
         } else {
-            return room.size + commonAreaShare + this.calcInternalAreaShare(room);
+            return room.size + this.calcInternalAreaShare(room);
         }
     }
 }
@@ -129,8 +113,6 @@ const addedCost = 1.2;
 export const minRent = 9.45 + addedCost;
 export const maxRent = 13.06 + addedCost;
 
-const commonArea = 388.80;
-
 // Calculate total number of people
 var _numPeople = 0;