added criteriaset directive

this directive is a fieldset containing the adopters criteria for
adoption. it is currently only used in the adopters view, but is
intended for use in the matching view as well.
Merge remote-tracking branch 'upstream/master'
updated adopter list to match adoptee list

added delete to adopter list to match adoptee
relabeled enroll date column to match
removed updated date information to match
Merge Upstream
Merge pull request #36 from thombrg/master

Added criteria directive and updated adopter grid to match adoptee grid delete action and column layout