Tweak the heck out of the repository search box.
The search box had some drawing problems, especially when scrollbars were

visible. I hadn't noticed this during the initial development because OSX.
This change tweaks the heck out of the javascript and CSS to try to make things

draw more reliably. The "Repositories" header is now hidden when the search box

is visible, to make it less likely that things will overlap. I've also tried to

tweak the positioning code to make it work better when scrollbars are present.
This is still not 100% perfect, but I'm about ready to hunt down the box model

spec authors and stab them in the face, so I'm going to leave it here for now.

Played around with this in Chrome, Safari, and Firefox, using a handful of zoom

levels. Turned on scrollbars always and saw that things were improved (though

not perfect).