Add converted currency metrics that dynamically update the conversion rate

Especially with the push towards virtual report suites, it seems increasingly useful/necessary to have a way to convert currency from what the originally-specified currency code for a report suite is set as. Although virtual report suites allow the user to change the time zone, it does not allow you to change the currency code for revenue reporting. I think the better solution than updating the currency code at the VRS level may even be to just have standard revenue metrics with the conversion rates built in. My company, for one, has groups of stakeholders that often look at UK/EU properties together, but the employees may prefer either GBP or EUR for their reporting. It would be great to allow them the flexibility of reporting in whichever currency they wish regardless of the report suite settings.