PT-796 - removed parameters that were causing problems

	modified:   modules/custom/api_petitions/api_petitions.module
	modified:   modules/custom/petitions_data/classes/PetitionsIndexMongoRaw.class.inc
PT-796 - fixed issues with combining parameters effecting the same columns

	modified:   modules/custom/api_petitions/api_petitions.module
	modified:   modules/custom/petitions_data/classes/PetitionsIndexMongoRaw.class.inc
PT-796 - added files that were missed in the last commit

	modified:   modules/custom/api_petitions/api_petitions.module
	modified:   modules/custom/petitions_data/classes/PetitionsIndexBase.class.inc
Merge branch '7.x-2.x' of https://github.com/bryanhirsch/petitions into 7.x-2.x