add hover detail to rescuetime graphs.
Set a max y-axis  Rescuetime graphs.

Otherwise a really good day of work makes it look
like you did less the rest of the week, since Rickshaw refuses to
put labels on axes when graphs printed this small. I set it the max to 16,
but we can modify if needed.
Merge branch 'master' of github.com:total-impact/impactstory-analytics
Remove Distribute from requirements.txt...it's in the virtualenv by default nowadays.

Causes installation via 'pip install -r requirements.txt' to fail.
Remove unused numpy import.
Change h1 from 'analytics' to 'dashboard'