Comment length / Date UI Fix
Added birthday (optional)

- useful for stats calculation
Added StatsColors

- generate colors for statistics
Added Charts.js and descriptive-statistics
Added Stats module

- the Stats module calculates various statistics associated with your youplay usage
- including: video count, start / end dates, time spent watching (absoulute and in percent since birthday), avg. video duration and std. dev.
- relies on Charts.js to create doughnut and line charts of browser usage and provider distribution