Automatically generated installer lang files
Merge branch 'install_master' of https://git.in.moodle.com/amosbot/moodle-install
weekly release 2.8dev
MDL-46567 gradereport_history: Initial commit with basic structure of the report
MDL-46567 gradereport_history: Prevent duplicate username column from rendering
MDL-46567 gradereport_history: Fix bug with paging
MDL-46567 gradereport_history: Move paging implementation to db layer
MDL-46567 gradereport_history: Extra version.php info
MDL-46567 gradereport_history: Basic readme.md
MDL-46567 gradereport_history: Basic codestyle, phpdocs and other minor cleanups

This commit includes following changes:-
- Fix codestyle issues
- Remove readme file
- Fix and add file headers
- Fix and add missing phpdocs
MDL-46569 gradereport_history: Move class gradereport_history_user_button to proper namespaced location
MDL-46569 gradereport_history: Move class gradereport_history_filter_form to proper namespaced location
MDL-46569 gradereport_history: Create a helper class
MDL-46569 gradereport_history: Use table_sql for the report

This patch includes:-
- Convertion of the code to use new renderable/renderer apis
- Rewrote the code to remove all custom sorting, etc and use table sql instead
- Usernames are now clickable
- Grade items are now clickable
- Grade history is now displayed even if the grade item is deleted
- We are now using table sql for downloads so export in multiple formats is supported
- Feedback is now properly formatted
- Source fields are not capitilised anymore
- Paging is not shown on top of filters anymore
MDL-46649 gradereport_history: delete the old class grade_report_history
MDL-46649 gradereport_history: Refactor ajax.php to use the new user apis
MDL-46649 gradereport_history: Add apis to get users and user counts