Start with individual design to the graphs.
Add Categories

Heavily "inspired" by the blog-categories of mezzanine, this adds categories to workouts.

Directly planned is:

 - Filter categories in the workout list.
 - Show filtered summary graphs for categories, thus allowing to compare same with same.

The future might bring:

 - Automatic categories attached to newly imported fit-files based on certain rules. For example ```if avg_speed < 7: tag_with 'Just a stroll'```.