Notification of string changes

Author: Helen Foster
MDL-58877 lang: Merge English strings from the en_fix language pack
Significant string changes:

* loginerror_cannotcreateaccounts in auth_oauth2 - more understandable
error message
* config_keep_groups_and_groupings and config_keep_roles_and_enrolments
in core_backup - switch fix


http://git.moodle.org/gw?p=moodle.git;a=commit;h=0d86195e8d8133c4b1d6592523b299e91fdab69f
http://github.com/moodle/moodle/commit/0d86195e8d8133c4b1d6592523b299e91fdab69f

+ 3.3 en [loginerror_cannotcreateaccounts,auth_oauth2]
+ 3.3 en [config_keep_groups_and_groupings,core_backup]
+ 3.3 en [config_keep_roles_and_enrolments,core_backup]
+ 3.3 en [enablecompletion_help,core_completion]
+ 3.3 en [crontask,mod_scorm]
+ 3.3 en [mysitenotfound,repository_onedrive]