server - enforce users model GA query & npm query have same date range
Address most of Ray's comments:

- Go to bracket/paren free style for parseArray
- put movingAverage into the right closure
- let backend manage date alignment problems
- tick formatting / general axis cleanup
- import plottable.css into b-app.less
- modify gulpfile to minifiy plottable
- increase npm install line thickness to 4px