Nail: Implemented in genova some of the changes implemented earlier
	in the prisoner version of the experiment:
	1) renamed variables to more intuitive labels
	2) created a box with all the contract relevan info on top
	3) tied the behavior of the box (inclusion/ommission of
		certain elements to the values of variables)
	4) soft-coded certain parameters
Nail: Image tagging:
1) text field disabled until the training is completed
2) 1) is tied to the value of the treatment dummy variable training
3) text fields enabled once the training is completed in case
	training treatment is on
Nail: Image tagging, feature added:
1) The submit button related to the task is disabled by
	default and is subsequently enabled by
	filling the five text areas.
Nail: Image Tagging: Added feature:
1) When the value of the training dummy variable is 0 then
	a scaled-down version of the training is offered
	rather than no training at all.
Nail: Image Tagging: Downloaded photos which were referred to from the
	image tagging task to the local directory structure and changed
	the relevant reference in the HTML file.