Notification of string changes

Author: Helen Foster
MDL-67979 lang: Import fixed English strings (en_fix)
Significant string changes:

* configcustommenuitems,core_admin - corrected example
* custommenuitems_desc,tool_mobile - fallback behaviour of custom menu
items in the app


http://git.moodle.org/gw?p=moodle.git;a=commit;h=62931543fb904f94dda0b7f607179ce73ab6bc6e
http://github.com/moodle/moodle/commit/62931543fb904f94dda0b7f607179ce73ab6bc6e

+ 3.7 en [singledirectory_help,cachestore_file]
+ 3.7 en [lockzeropoints_help,gradingform_rubric]
+ 3.7 en [allowframembedding_help,core_admin]
+ 3.7 en [configcustommenuitems,core_admin]
+ 3.7 en [configenablewebservices,core_admin]
+ 3.7 en [criteria_7_help,core_badges]
+ 3.7 en [dndnotsupported_help,core]
+ 3.7 en [modvisible_help,core]
+ 3.7 en [modvisiblewithstealth_help,core]
+ 3.7 en [modvisiblehiddensection_help,core]
+ 3.7 en [display_help,mod_folder]
+ 3.7 en [mustprovidediscussionorpost,mod_forum]
+ 3.7 en [inactiveoverridehelp,mod_quiz]
+ 3.7 en [foldername_help,repository_nextcloud]