PT-782 - connect petitions resource's signatures relationship to Drupal backend to return real signatures data
PT-786 - update example requests and responses to include real data
PT-787 - expose petition status as a readable string

	modified:   UPDATE.txt
	modified:   build-petitions.make
	modified:   drupal-org.make
	modified:   modules/custom/api_petitions/api_petitions.module
	modified:   modules/custom/api_petitions/example_responses/api_petitions_index.response.json
	modified:   modules/custom/api_petitions/example_responses/api_petitions_load_signatures.response.json
	modified:   modules/custom/api_petitions/example_responses/api_petitions_retrieve.response.json
	modified:   modules/custom/petitions_data/classes/ISignaturesRaw.class.inc
	modified:   modules/custom/petitions_data/classes/PetitionLoadMongoRaw.class.inc
	modified:   modules/custom/petitions_data/classes/PetitionsMongoRaw.class.inc
	modified:   modules/custom/petitions_data/classes/SignaturesMongoRaw.class.inc
	modified:   modules/custom/petitions_data/classes/SignaturesRawFactory.class.inc