Add dashboard

widgets/daily_xkcd/daily_xkcd.html

@@ -0,0 +1,7 @@
+<h1 class="header" data-bind="'xkcd #' | append num | append ': ' | append title"></h1>
+
+<img class="xkcd-image" data-bind-src="img" />
+<p class="date" data-bind="'Published: ' | append datestr"></p>
+<p class="caption" data-bind="alt"></p>
+
+<p class="updated-at" data-bind="updatedAtMessage"></p>