Notification of string changes

Author: Safat
MDL-81924 smsgateway_aws: Add hooks for SMS gateway management
Originally implemented as MDL-81732.

Co-authored by: Michael Hawkins <michaelh@moodle.com>


http://git.moodle.org/gw?p=moodle.git;a=commit;h=3348832b78a456ab12d5b83a2954af27b7487fe0
http://github.com/moodle/moodle/commit/3348832b78a456ab12d5b83a2954af27b7487fe0

+ 4.5 en [api_key,smsgateway_aws]
+ 4.5 en [api_region,smsgateway_aws]
+ 4.5 en [api_secret,smsgateway_aws]
+ 4.5 en [aws_information,smsgateway_aws]
+ 4.5 en [gateway,smsgateway_aws]
+ 4.5 en [usecredchain,smsgateway_aws]
- 4.5 en [api_key_help,smsgateway_aws]
- 4.5 en [api_region_help,smsgateway_aws]
- 4.5 en [api_secret_help,smsgateway_aws]
- 4.5 en [countrycode,smsgateway_aws]
- 4.5 en [countrycode_help,smsgateway_aws]
- 4.5 en [gateway_help,smsgateway_aws]