Navigate through search results with arrow keys

[AmadeusW]

When the focus is within the search box, pressing up and down keys should bring the focus down to the search results (or at least visually simulate focus). Pressing enter should navigate to the selected search result.

[JoshVarty]

It'd be nice if this was the case for the treeview as well. So you could expand and close nodes with the arrow keys too.

Maybe there's a way we can intelligently do this for both.

[AmadeusW]

Good idea. The search results are done using a and span elements, while the treeview operates on li tags. We could use a class attribute, or a common tag.

[JoshVarty]

We should first do #96 and then do this one, just to make sure nothing changes and causes us to do this twice.

[AmadeusW]

Since #96 will use icons for various file types, we could leverage the style in #71 and display icons next to search results - to help differentiate between results that are types (public, abstract, etc), methods, constructors, fields, constants etc.