Fleshed out gene instance, added stubs for more cards.
Finished prototype of biochem and domain widgets.
Dummy operon card and a generalized card layout manager.
Added a simple example widget - kbaseHello - and demonstration of how to use it as a landing page card.
More operon widget work, fixed problems with other widgets.
Merge branch 'bootstrap-3.0.0'
Merge branch 'develop'

* Network widget
'make dist' depends on building the datavis lib.
Improved dist dependencies.
More fixes/improvements to make.