Fix up virtualenv script
A lot more refining of the data import

With the data cleaner, the experience of browsing projects is less
frustrating.  Only active and successful projects are included.  Many, many
encoding mistakes (but by no means all) are tidied up.  However, using a
WebView for description is now useful.
Switch to ActionBar List Navigation

The tabs were just wrong!  :)
Add Event Details Activity

Closes #4