Jalama

Make rules more sophisticated in order to populate the UI labels etc in a more
user-friendly.manner.

1) Look for an attribute/attributeLabel (not a required element), and use it if
it exists, otherwise, use attributeName (required)

2) Look at the eml-constraint for each attribute, and if it's "not nnull", then
make the input widget require a value (minoccurs=1) - if it's not required, make
minoccurs=0

3) Need to look carefully at EML and decide what other info can be used -
documentation etc?