Issue #2641518 by dimaro, Mac_Weber, pk188, Mile23, anya_m, naveenvalecha, heykarthikwithu, aditya_anurag, nesta_, anchal29, rakesh.gectcr, sdstyles: Replace deprecated usage of  entity_create('config_test') with a direct call to ConfigTest::create()

Issue #2568439 by anchal29, hussainweb, priya.chat, r_sharma08, drupal.ninja03, anil280988, snehi, tedbow, joyceg, amit.drupal, jhodgdon: profiles/README.txt incorrectly states that installation profiles do not 'have any effect on' already running sites