remove "fixes"

I spent almost an entire day hunting down what I thought were bugs. Mainly, an essential line magically disappearing and my tabs getting smaller. I don't think pentadactyl should have an opinion on how things should look. Do I think the tabs are too big? For sure I do. Do I want pentadactyl to modify them? NO. I'll install the shrink-those-bigass-tabs add-on or I'm going to write my own userChrome file if I want to do that. Pentadactyl should only display and hide stuff, not modify the way they are displayed.

I removed some comments along the way because I think they are related. Correct me if I'm wrong.