adding memoize.js to all of the slug files
Squashed 'subtree/bokehjs/' changes from 35b33ba..b1c257d

b1c257d  merged
90aeb78  added memoize.js

git-subtree-dir: subtree/bokehjs
git-subtree-split: b1c257dcc509537aae3ac2ec49caa1519e24096e
 merged subtree changes