Merge pull request #1505 from ether/fix-for-long-strings

very simple fix that might break other things but stops the caret focus ...

src/static/css/iframe_editor.css

@@ -176,3 +176,7 @@ p {
 }
 
 #overlaysdiv { position: absolute; left: -1000px; top: -1000px; }
+
+.ace-line{
+  overflow:hidden; /* Stops super long lines without being spaces such as aaaaaaaaaaaaaa*100 breaking the editor */
+}