Author: Helen Foster
MDL-53980 lang: Merge English strings from the en_fix language pack
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f7423fa24019e73b64a1a6542d0b71c938489f97
http://github.com/moodle/moodle/commit/f7423fa24019e73b64a1a6542d0b71c938489f97
+ 3.0 en [auth_dbpasstype,auth_db]
+ 3.0 en [auth_ldap_host_url,auth_ldap]
+ 3.0 en [changepasswordhelp,core_auth]
+ 3.0 en [unlimitedgrades_help,core_grades]