Added controls, revised styles, cleaned root folder

Hi Alberto,

1. I have cleaned up and checked in python files under the "py" folder, and you could do whatever you want to do with those, overwrite them as needed. Important to save a copy of your work before doing a merge, and then just discard my changes with regards to the py files.

2. I've committed everything to make sample.html work, even image files required by jquery UI. I hope you like it. I still need to center the color legend, just have to read up on google viz (I'm more familiar with d3.js).

3. When you generate data files with additional user dimensions, I suggest saving those as companyName_age_sex.js. Inside these data js files, there should be the object property value as json literal array of arrays, for example, data["companyName_age_sex"] = [["loc1", sentiment1], ["loc2", sentiment2], ...]

4. Let me know if you have questions, no time to skype until maybe later this week, let's email for now.

Edgar