Add ability to output event properties at each step of funnel.
Add unittests
Refactor funnel analysis, update tests.
Add docstrings, implement stream inversion.
Use xget instead of get for Cassandra backend
Merge pull request #46 from Locu/bkt

Use xget instead of get for Cassandra backend
Support multiple series per chart
Add assertion that FunnelStep doesn't have invert=True and output_fields specified.
Merge pull request #40 from Locu/update-funnel-analysis

Update funnel analysis
Legend is now usable
Color scheme
New board button
Rewrite in angular
Multiple panels per dashboard
Fix initialization bug
Add several buttons
clean up css and remove backbone.js implementation
Remove PyCode references
Address code review comments
Address code review comments