Custom Gene search UI

[naegelyd]

This is the specific implementation of the generic control that will follow from the discussion here: chop-dbhi/cilantro#402

We have the need in multiple projects that integrate genomic data to have a solid gene search capability. While I'm most interested in getting this going for Varify, I think this is likely to have utility beyond that in PCGC, AudGenDB, and other stuff I'm probably forgetting. It is at least as generally applicable as the diagnosis browser. I'm certain external users would have a use for this. It's essentially a modification of our existing ID-type search.

The mock-up is a little sloppy as far as layout, but the key behavior is that you don't get a paginated list of genes, but a search area that hits the backend and displays only what you search for (though once results come back they could be paginated so as to allow someone to do a broad search and flip through results). Note that the search should be smart and hit multiple fields including aliases.