Simplify and optimize loading the gadget

[siddharthvp]

Currently, only the https://en.wikipedia.org/wiki/MediaWiki:Gadget-afchelper.js page gets loaded via ResourceLoader. If you're in User or Draft namespaces, it loads /core.js and /submissions.js and everything else (css, html templates).

Instead, we can use the gadget definition to restrict the gadget to those namespaces. We can then remove all manual http calls and just let ResourceLoader load everything in one go. Note that ResourceLoader uses browser caches (localstorage and/or disk cache) and is much faster than using mw.loader.load to invoke action=raw which is not cached at all.

• move namespace check to MediaWiki:Gadgets-definition
• move page loads to MediaWiki:Gadgets-definition, then remove $.getScript(), AFCH.load(), and mw.loader.load code

[siddharthvp]

NovemLinguae
changed the title [-]Simplify and optimize loading the gadget[/-] [+]move namespace checking code from JS to gadget definition

it's not just about moving the load condition, but also removing the internal http calls to fetch parts of the script