Notification of string changes

Author: Stevani Andolo
MDL-75262 tiny_accessibility: Implement Accessibility Checker
Co-authored by Andrew Lyons <andrew@nicols.co.uk>

Part of MDL-75966


http://git.moodle.org/gw?p=moodle.git;a=commit;h=b7f2bbb08016f353a322c9388d4867932a80d2b1
http://github.com/moodle/moodle/commit/b7f2bbb08016f353a322c9388d4867932a80d2b1

+ 4.1 en [emptytext,tiny_accessibilitychecker]
+ 4.1 en [entiredocument,tiny_accessibilitychecker]
+ 4.1 en [imagesmissingalt,tiny_accessibilitychecker]
+ 4.1 en [needsmorecontrast,tiny_accessibilitychecker]
+ 4.1 en [needsmoreheadings,tiny_accessibilitychecker]
+ 4.1 en [nowarnings,tiny_accessibilitychecker]
+ 4.1 en [pluginname,tiny_accessibilitychecker]
+ 4.1 en [report,tiny_accessibilitychecker]
+ 4.1 en [tablesmissingcaption,tiny_accessibilitychecker]
+ 4.1 en [tablesmissingheaders,tiny_accessibilitychecker]
+ 4.1 en [tableswithmergedcells,tiny_accessibilitychecker]
+ 4.1 en [privacy:metadata,tiny_accessibilitychecker]
+ 4.1 en [viewissue,tiny_accessibilitychecker]
+ 4.1 en [helplinktext,tiny_accessibilitychecker]