Allow template statements to be repeated

[tkuhn]

Both, for optional (0-n) and mandatory (1-n) cases.

[tkuhn]

This is added in 9f9d4cc and the latest release 1.13.

Repeatable statements are defined as nt:RepeatableStatement. Example usage here: http://purl.org/np/RANPP5eYKEk3YezLtFczadGBvLUigTu1rXgS-2QE1Muoc

This can be combined with grouped and optional statement declarations.

Example screenshot:

Adding and removing of repetitions is done through the + and - buttons.

Local resources and all kinds of placeholders are considered to have narrow scope if they only appear in one statement (group). Elements with narrow scope get separate identities for each repetition (e.g. a text field can be filled with different values for each repetition).

Completion of fields via URL parameters is not yet fully supported for repeatable statements.