Made changes to population_script to save the PtScore objects so that the score will be computed.
Updated models for PtScore so that the values for pushups and situps will have a leading zero if they are single digits. Also reformatted the comments for the PtScore model.
Added fields to the PtScore model to hold the score for each event, as well as the total score.
Merge remote-tracking branch 'origin/master'

Conflicts:
	pt/models.py
Merge remote-tracking branch 'origin/master'

Conflicts:
	population_script.py