Update Experiment template to include Task with ParameterValue formset.
Make Task experiment and dataset fields required. Add nice __unicode__
methods for some models.
Add complex form for Experiment and its Tasks with ParameterValues.
Remove stdout and stderr form fields from Experiment tasks.
Add experiment edit url and its view.
Add experiment fields to experiment create page.
Separate experiment create and update templates.
Add page to create new Experiment with tasks and their parameters.