added freelancer invoice template (#254)

assets/sass/toolbar.scss

@@ -0,0 +1,29 @@
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/* Page based action buttons in the upper right corner of the content area */
+.content-header > .breadcrumb {
+    position: absolute;
+    float: right;
+    background: transparent;
+}
+/* Right sidebar with additional tabs for personal settings and "About Kimai" section */
+.control-sidebar {
+    select {
+        color: $input-color;
+        background-color: $input-bg;
+    }
+    div.image {
+        img.img-circle {
+            max-width: 34px;
+        }
+    }
+}
+/* The filter form available on most pages above the datatable */
+.toolbar form {
+    font-size: $font-size-base;
+}