Add labels, placeholder value, tick interval to range question type

[seadowg]

Blocked by #7077

As spec'd here

[lognaturel]

@grzesiek2010 when you're ready to start on tick labels, if you update JavaRosa you'll be able to have a form with an itemset for range and should be able to FormEntryPrompt.getSelectChoices to get the labels.

[seadowg]

you'll be able to have a form with an itemset for range and should be able to FormEntryPrompt.getSelectChoices to get the labels.

Just to add to this, and I've mentioned this already, but I'm hoping we can manage to avoid adding the same ANR problems here and have an async load for the select items (with a loading state in the widget). So yeah, under the hood they're still just accessible via getSelectChoices, but we probably want a new mechanism for grabbing them asynchronously (through our SelectChoiceLoader abstraction).