Fixed firefox compatibility.

Firefox 34 doesn't support the shadow DOM, so there was an ID conflict
and some CSS styles weren't being applied.

I also removed the search-on-return feature for the masterlist search,
as Chrome and Firefox handle keypresses differently and it was broken.
Fixed some styles not being applied correctly in FF & IE.

As they don't support the Shadow DOM, so the selectors weren't working.
Fixed buttons and items containing links shrinking.

In Firefox 34 and IE 11.