Added general progress query and related graphs

In this PR:
- General progress query and two visualizations: bounce rate, general funnel (#44)
- Fix minor bugs in graph display dates
- Upgrade to node 0.10.x and awsbox 0.6.0
- Fixes 3 bugs causing problems with segmentation views (#52, #76)

Need to reprocess data when pushing to server to get the general progress steps.