Database File
Create method to calculate the number of "YES" votes.

signed-off-by: David Carlos <ddavidcarlos1392@gmail.com>
Create the method on the Controller to generate the Graph.

signed-off-by: David Carlos <ddavidcarlos1392@gmail.com>
Create method to list all propositions resume.

signed-off-by: David Carlos <ddavidcarlos1392@gmail.com>