Fix bokehjs.html page

Clickable images to fix https://github.com/ContinuumIO/bokeh/issues/671. Links lead to JSFiddle instances of each glyph.

Preview:

![bokehjs_interface_reference__bokeh_0_4_4_documentation](https://cloud.githubusercontent.com/assets/4944634/3249786/273ba16e-f19d-11e3-8901-aabafcbe43af.png)