remove commented out code / minor cleanup
Merge branch 'master' into constraint-auto-id
Autocreate constraint message itext id by default (Case:33568)

1. Move constraint message itext id input to advanced properties
2. Don't display constraint message inputs for groups and repeats
3. Auto check auto itext id checkbox if you change a message and there
isn't already an itext id for that itext, for question, hint, and
constraint itexts.
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Merge pull request #35 from dimagi/constraint-auto-id

Constraint auto ID