create_animations improvements, progress towards removing clientresp (#1432)

* Automatically extract inline data arrays from figure in create_animations. Auto upload extracted grid

* Don't extract columns inside object arrays since chart studio doens't support this yet

* Add DeprecationWarning to plotly.plotly.plot when fileopt parameter
is specified with a non-default value. This will allow us to drop this parameter and the clientresp API
in plotly.py version 4

* Explicitly enable Deprecation warnings in test case. Seems nose filters them out by default so nothing is caught

Author: jonmmease