Merge pull request #4 from knowtheory/master

fullscreen button should open new window with current state
add setState method
Merge remote branch 'dc/master'
Merge pull request #6 from ashaw/master

Method to set the viewer state
upgrading for latest underscore
Adding a mechanism to tear down viewers without throwing errors. Unhappily, a memory leak still remains.
Retaining references to event handlers used to identify user interaction events with viewers.
Moving to more extreme (and explicit) measures to unbind viewer listeners
new version of viewer with viewer.api.unload
don't remove the container.
Ensuring document contributors always appear in the sidebar.
Bumping up vendored version of underscore.
Remove AMD from the viewer's version of underscore, 'cause it will never need it.
Upgrading to 1.3.0, now with no AMD (instead of just pulling it out).
adding CSS for black redactions.
make that black by default, opt-in for red.
first draft of a new mini version of the docviewer for < 500px wide sizes
fix browser detection for IE10
fixing contributor logic
baselining the z-index to 0