Invision Power Board integration update

I've made a couple of small updates to the IPB integration script, as it seems a few people were having layout problems.

I've made a couple of small updates to the IPB integration script, as it seems a few people were having layout problems. I've tested the integration with IPB v1.2f which is the latest stable version and all seems well, you must follow the instructiions for it to display and integrate properly. It's available in the downloads/accessories section. Here's a screenshot of how it looks.