added equals and hashcode override to GSRReservation

PennMobile/src/main/java/com/pennapps/labs/pennmobile/classes/GSRReservation.kt

@@ -37,4 +37,21 @@ class GSRReservation {
     @Expose
     @JvmField
     var info: Map<String, String>? = null
+
+    override fun equals(other: Any?): Boolean {
+        return other is GSRReservation && this.booking_id == other.booking_id && this.name == other.name
+                && this.fromDate == other.fromDate && this.toDate == other.toDate && this.gid == other.gid
+                && this.lid == other.lid //maybe toss in info here
+    }
+
+    override fun hashCode(): Int {
+        var result = (booking_id?.hashCode() ?: 0)
+        result = 31 * result + (name?.hashCode() ?: 0)
+        result = 31 * result + (fromDate?.hashCode() ?: 0)
+        result = 31 * result + (toDate?.hashCode() ?: 0)
+        result = 31 * result + (gid?.hashCode() ?: 0)
+        result = 31 * result + (lid?.hashCode() ?: 0)
+        result = 31 * result + (info?.hashCode() ?: 0)
+        return result
+    }
 }