Add dice rollers to 5e sheet

[derikb]

Perhaps buttons on various skills, saves, etc. that then roll a single dice roller.

The buttons will have to calculate what to roll and the bonuses, set them on the roller, then trigger the roller.

Resetting the roller will probably need to reset everything, which might require new methods on the roller itself.

[derikb]

With the new dice roller component should be able to add small buttons to various attributes, saves, skills, etc. that will automatically calculate the roll needed and then trigger it.

(Though dis/advantage will be a little tougher? Or just have people click twice and then pick high/low themselves).