The page comments component would throw an error due to references to
form elements/content, when form elements may not exist due to
permisisons.
For #4531
Updated reply inidicator to fit with new nesting system, only showing on
view when nest within nesting structure.
Updated the general design to be a bit cleaner and better adapt on
mobile.
Tested on FF+Chrome, inc. dark mode.
- Updates old components to newer format, removes legacy component
support.
- Makes component registration easier and less duplicated.
- Adds base component class to extend for better editor support.
- Aligns global window exposure usage and aligns with other service
names.
- Updated comment routes to be simpler.
- Updated comments JS to align better with updated component system.
- Documented available global JS functions/services.
- Removed redundant controller method.
- Added window.$events helpers for validation messages and
success/error.
- Updated JS events system to not be class based for simplicity.
- Added window.trans_plural method to handle pluralisation/replacements
where you already have the translation string itself.
Fixes#1836
