1. Improve upgrade note
2. Don't abuse $PAGE to get the current course/cm
3. Use validate_context, never $PAGE->set_context()
4. Reset current coursemodule in validate_context().
5. Respect moodlepageclass when calling an external function.
Instead of injecting the HTML + JS directly - return a promise that is resolve with
the HTML and JS. This gives the caller control over how and when to inject the nodes
in the DOM. Also modify templates.replaceNode functions to cleanup YUI events mess.
Also pass the context to the callback so it can be verified.
Also pass the arguments to the callback as a named array - not a flat argument list.
Also - only load external scripts if they are not already loaded.
Now the db/service.php array can contain these extra keys to provide information
on how a webservice may be called:
'ajax' => true (Default is false)
Replaces the xx_is_allowed_from_ajax callback.
'loginrequired' => false (Default is true)
Means that this webservice can be called through lib/ajax/service-nosession.php
which sets NO_MOODLE_COOKIES to true (faster). This is only safe for webservices returning
static public data (e.g. get_string).
This is a new script that can call any function in the built-in AJAX webservice. This is
a new system service that is added at install time (like the mobile webservice). It has no
protocols added to it, but it accessible by a new ajax script /lib/ajax/service.php.
Requests and responses to the script are required to be in json format, and multiple functions can
be called in a single request.
The core_get_string webservice and friends have never passed lang values
properly, (so never worked) and when I fixed that I found they were passing
lang parameter into the lazyload parameter.
