Calculate EVM on a daily basis instead of weekly basis

[gamafranco]

Currently we're calculating EVM on a weekly basis, and pulling the calculations to the beginning of the week.

This has several drawbacks:

• PV on day 0 is show as the PV of day 7
• After 5 days of work, EV and AC are straight lines, instead of ascending lines
• Sprints of 2.5 weeks show the PV finishing on the beginning of the third week, instead of the middle.

Please do an experiment with daily calculations instead of weekly calculations to see if the result is better.

Otherwise we need to consider the end of the week as the maximum PV and not the begging.

[momibun926]

+1

[nfecastro]

This issue is already in consideration. Once I got time I will create a new branch and push the alterations.

[nfecastro]

Check dailyBasisEVM branch. This branch also includes the alteration from the issue #43