The amount of css rules required for this plugin is quite high. To accomodate the
moodle plugin practice of plugin specific css selectors, this makes the css rules
quite hard to maintain.

Unfortunately, moodle does not extend the sass/scss compiler support to plugins
that are not a theme.

To alleviate this, this plugin extends moodle's Gruntfile.js scripts
to compile 'scss/styles.scss' into 'css/devstyles.css' (and 'styles.css')

'css/devstyles.css' is used instead of styles.css in order to avoid having to clear the theme
cache every time a style rule is changed during development.

styles.css is used in production environtments and css/devstyles.css as an override in
production environments, in order to avoid having to clear the theme
cache every time a style rule is changed during development.

The grunt command to compile is 'grunt scssplugin', but 'grunt watch' or just 'grunt' will
include these scss files in compilation too
