Squashed 'subtree/bokehjs/' changes from 1d81585..ecc6479

ecc6479 a select tool that should send less over the wire
ba93e9a  a title for the audio demo
4285edd  less chatty
fc86909  more consistent execution order between render_x and render_y
2f429dc fix my previous messed up commit
0b0f118 merge conflict
febef18 Rename imageuri to image_uri
a77fc82 fix up spectrogram example to use new angle convention
4774589 reverse angle convention to match mathematical convention

git-subtree-dir: subtree/bokehjs
git-subtree-split: ecc6479810e047c60aaa1d865f86a93b3149dd9b
pulled most recent bokehjs