Add configurability to range question type #817
Description
As described in this forum post, add the following parameters allowed for range only.
Note that XLSForm uses _ as a separator by convention rather than - which is common for XForms attributes.
tick_interval
When present, its value MUST:
- be greater than zero
- be an exact multiple of
step - be less than or equal to
end - start
tick_labelset
For a row with type range and non-empty tick_labelset parameter, the value of tick_labelset MUST match exactly one list_name on the choices sheet.
The name values for that list_name MUST be numeric strings that are multiples of step or tick_interval between start and end, inclusive.
See the XForms spec for additional validation.
placeholder
Value must be a multiple of step that is between start and end, inclusive