(#5906) - test coverage for syncing deleted docs with custom fields
(#5906) - test coverage for syncing deleted docs with custom fields

 * test that deleted doc properties sync
 * clean up replication with deleted document test

seigel/pouchdb,shimaore/pouchdb,garrensmith/pouchdb,seigel/pouchdb,tyler-johnson/pouchdb,shimaore/pouchdb,tyler-johnson/pouchdb,pouchdb/pouchdb,shimaore/pouchdb,seigel/pouchdb,cdaringe/pouchdb,pouchdb/pouchdb,garrensmith/pouchdb,tyler-johnson/pouchdb,cdaringe/pouchdb,cdaringe/pouchdb,pouchdb/pouchdb,garrensmith/pouchdb