Resolve "As a user, I would like a town specific page which shows all trails for that town so that I can easily see my progress"

Closes #69 (closed)

src/main/java/Team5/SmartTowns/Data/Calculator.java

+package Team5.SmartTowns.Data;
+
+public class Calculator {
+
+
+    public int divide(int i, int i1) {
+        return i / i1;
+    }
+
+    public int add(int i, int i1){
+        return i+i1;
+    }
+    public int subtract(int i, int i1){
+        return i-i1;
+    }
+
+    public int multiply(int i, int i1){
+        return i*i1;
+    }
+
+}