EditableScale should have a history of entered scales

[pagameba]

It would be really nice if the EditableScale widget kept a history of previously entered scale values and allowed you to jump to them quickly. Some things to think about:

• should be possible to put it in a toolbar (esp a BottomBar with the picker opening upwards)
• should be possible to define how many entries it remembers
• should be possible to pre-populate the list
• the list should be sorted
• the history should be smart enough to not put the same entry in twice, within a certain (possibly configurable) tolerance.

[pagameba]

This is a bit more possible with the new version of Jx, the new Combo button is a little smarter than it was before. May still need some enhancements to support all the features listed above.

[madair]

possible with Jx3.0?

[pagameba]

There are some new things in JxLib 3 that make the list of *shoulds* a little easier, but we haven't built an editable combo box yet. It is on my list of things to do so I think we should keep this one in the current milestone.