Bug with features reset date, they should always be generated after now.

[julienarcin]

@gerardojbaez There is a bug with features reset dates. Reset dates should never be set before today.

If a user subscribes to a yearly plan, uses a feature monthly resettable feature in January, and uses it again on April, the code to regenerate the feature reset date is not correct. It will generate a reset date 1 month after on the first use, then regenerate the date 1 month after on the second use, etc.

I'm submitting the PR (with tests) now.

[gerardojbaez]

Hey @julienarcin, thanks for the report and the PR.