carry forward last used settings for adding multiple new widgets

[pb66]

When adding a number of widgets of a similar design, it would be very useful if the settings selected in the first widget are carried forward to the next new widget (of the same type?) rather than having to set the font, weight, color, size etc etc from scratch with each new widget.

Hopefully this can be done by playing with the scope of the widget variables and/or not resetting them to defaults when loading a blank widget. It only needs to last the session, not a permanent saving of user preferred settings.

See https://community.openenergymonitor.org/t/using-feed-data-in-textbox/8322/10?u=pb66