Included bills in month report. [skip ci]

app/Helpers/Collection/Bill.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace FireflyIII\Helpers\Collection;
+
+
+use FireflyIII\Models\Bill as BillModel;
+use Illuminate\Support\Collection;
+
+/**
+ * Class Bill
+ *
+ * @package FireflyIII\Helpers\Collection
+ */
+class Bill
+{
+
+    /**
+     * @var Collection
+     */
+    protected $bills;
+
+    /**
+     *
+     */
+    public function __construct()
+    {
+        $this->bills = new Collection;
+    }
+
+    /**
+     * @param BillLine $bill
+     */
+    public function addBill(BillLine $bill)
+    {
+        $this->bills->push($bill);
+    }
+
+    /**
+     * @return Collection
+     */
+    public function getBills()
+    {
+        $this->bills->sortBy(
+            function (BillLine $bill) {
+                $active = intval($bill->getBill()->active) == 0 ? 1 : 0;
+                $name = $bill->getBill()->name;
+                return $active.$name;
+            }
+        );
+
+
+        return $this->bills;
+    }
+
+}