made html asset embedding a configurable option for make_static()
made copying of ctm content to static view dir optional
Merge branch 'master' of https://github.com/gallantlab/pycortex into enh/static_options

(seeing if merging upstream is improving 'mergabilty' score)
Merge pull request #116 from infocortex/enh/static_options

Enh/static options