Adding the ability to add tabs to documentation and issue editing

Adding the ability to have syntax highlighted wiki (ie documentation)
ex:

<pre class="prettyprint">
int main()
{
	cout << "test" << endl;
}
</pre>

indefero/www/media/idf/js/allowtabs.js

@@ -0,0 +1,11 @@
+$("textarea").keydown(function(e) {
+  var $this, end, start;
+  if (e.keyCode === 9) {
+    start = this.selectionStart;
+    end = this.selectionEnd;
+    $this = $(this);
+    $this.val($this.val().substring(0, start) + "\t" + $this.val().substring(end));
+    this.selectionStart = this.selectionEnd = start + 1;
+    return false;
+  }
+});