Create a 'run-training' project

[gpellicciotta]

Should enable:

• Adding/importing a training schedule
• Starting a training, by giving it a name and a pre-defined schedule, then adding data to it
• Exporting training data
• Exporting previously imported schedules

Training schedule data should be:

• Name + description (optionally: origin URL)
• Array of training units with per unit: target distance + notes on what to do

Training data could be:

• Date on which a training unit was performed + time it was done in
• Optionally some free-form notes

[gpellicciotta]

A visual prototype was added