Footer for frontend and report errors link.

app/views/directives/footer.html

@@ -0,0 +1,17 @@
+<footer class="footer">
+    <ul class="list-inline list-unstyled">
+        <li>
+            ffffng ({{version}})
+        </li>
+        <li>
+            <a href="https://github.com/freifunkhamburg/ffffng" target="_blank">
+                <i class="fa fa-code" aria-hidden="true"></i> Source Code
+            </a>
+        </li>
+        <li>
+            <a href="https://github.com/freifunkhamburg/ffffng/issues" target="_blank">
+                <i class="fa fa-bug" aria-hidden="true"></i> Fehler melden
+            </a>
+        </li>
+    </ul>
+</footer>