Make help-text use pop-over instead of tooltip

[spble]

IN the Projected Cost Efficiency Statistics table, there are little question marks next to Time before unprofitable and max profit....

It was not obvious that one must hover over this in order to get the tooltip to appear.

It would be better if bootstrap's popovers could be used here, so that it shows up immediately.

It would also be good to provide some extra text on the 'time before unprofitable' -- I got the not applicable and didn't realise that's because I didn't predict far enough in the future.