A few UI issues

[abo...@gmail.com]

I've been playing with the 1.0.0b3.r1 release and must say I'm quite
pleased with the added functionality and all the bug fixes. A couple of
UI annoyances though:

1. The hard-coded background color: please consider changing the CSS as
described in
http://groups.google.com/group/zotero-dev/browse_thread/thread/ab95b151a0aeb9d2

2. The strange combination of tabs and rounded corners in the right
panel: there is definitely something wrong there. Firefox'
Tools/Options/Advanced section is a nice example of how tabs and
rounded corners can go together - this is different from Zotero's right
panel.

3. The arrow on the full-screen button should point the other way when
Zotero is in full-screen mode.

4. The tags button should have some more contrast.

5. The close button in the search field needs top and right padding.