add gab shortcode

content/post/testing-new-shortcodes.md

@@ -47,7 +47,11 @@ And this passage uses the standard markdown double-tilde to strike through, but
 
 A Gab Embed Widget:
 
-{{< gab >}}
+[Note: this widget presently does not work because of the security policy set on Gab]
+
+{{</* gab exitingthecave 107345603615120884 */>}}
+
+{{< gab exitingthecave 107345603615120884 >}}
 
 {{% ah %}} Multimedia {{% /ah %}}
 

layouts/shortcodes/gab.html

@@ -1,4 +1,6 @@
-<div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;">
-    <iframe src="https://gab.com/exitingthecave/posts/107345603615120884" style="position: absolute;
-    top: 0; left: 0; width: 50%; height: 100%; border:0;"></iframe>
+
+<div style="position: relative; padding-bottom: 1%; height: 100%; overflow: hidden;">
+    <iframe id="gab" type="text/html" height="100%" width="400"
+            src="https://gab.com/{{ index .Params 0 }}/posts/{{ index .Params 1}}"
+    style="border-width: 0"></iframe>
 </div>