MDL-57791 analytics: Changes after review

- Split model::predict in parts
- JS promises updated according to eslint-plugin-promise
- New API methods replacing direct DB queries
- Reduce insights nav link display cost
- Increase time limit as well as memory for big processes
- Move prediction action event to core
- Dataset write locking and others
- Refine last time range end time
- Removed dodgy splitting method id to int
- Replace admin_setting_predictor output_html overwrite for write_setting overwrite
- New APIs for access control
- Discard invalid samples also during prediction

lib/mlbackend/python/lang/en/mlbackend_python.php

@@ -1,5 +1,5 @@
 <?php
 
 $string['packageinstalledshouldbe'] = '"moodleinspire" python package should be updated. The required version is "{$a->required}" and the installed version is "{$a->installed}"';
-$string['pluginname'] = 'Python predictor';
+$string['pluginname'] = 'Python machine learning backend';
 $string['pythonpackagenotinstalled'] = 'moodleinspire python package is not installed or there is a problem with it. Please execute "{$a}" from command line interface for more info';