WIP Starting to work on IPython support for pydy.viz
WIP
WIP
WIP need to correct create_html method
Removed _constant_values from Scene class, only self.constant_values is retained
added widgets, and html display method to display_ipython().
Swapped widget line of code and HTML display line in ipython_display
Got widgets working, but still some minor bugs
Got widgets + html working to be in same output cell
Added Text box instead of sliders, rerun-simulation-button working
Rerunning of simulations working. Slight bug!
Added index_ipython.html to commit, which was left out by mistake
Using only one index.html for ipython as well as otherwise
Switched to SimpleHTTPServer, need to add tests
Cleaning up create_static_html
Cleaned up remove_static_html
Small PEP8 correction
Minor syntax correction, removed socket_server tests
Merge branch 'motion-view-dev' into ipython-support

Conflicts:
	pydy/viz/scene.py
Modified tests to adapt for new changes incorporated