add ckeditor indentblock plugin.

closes #101

customize.dist/ckeditor-config.js

@@ -8,7 +8,7 @@ CKEDITOR.editorConfig = function( config ) { // jshint ignore:line
     // magicline plugin inserts html crap into the document which is not part of the
     // document itself and causes problems when it's sent across the wire and reflected back
     config.removePlugins= 'resize';
-    config.extraPlugins= 'autolink,colorbutton,colordialog,font';
+    config.extraPlugins= 'autolink,colorbutton,colordialog,font,indentblock';
     config.toolbarGroups= [{"name":"clipboard","groups":["clipboard","undo"]},{"name":"editing","groups":["find","selection"]},{"name":"links"},{"name":"insert"},{"name":"forms"},{"name":"tools"},{"name":"document","groups":["mode","document","doctools"]},{"name":"others"},{"name":"basicstyles","groups":["basicstyles","cleanup"]},{"name":"paragraph","groups":["list","indent","blocks","align","bidi"]},{"name":"styles"},{"name":"colors"}];
 
     config.font_defaultLabel = 'Arial';