Use noscript fallback for captcha.
Merge tag '1.9.15.4' into noscript

4chan X v1.9.15.4.

Conflicts:
	src/Posting/QR.captcha.coffee
Merge commit '68dbb73' into noscript; allow selection of noscript or Javascript captcha.

Similar to reverted merge commit c7433d9271717df3f0f8d64e22abf73e85f8a5ca.

Conflicts:
	src/Posting/QR.captcha.coffee
	src/Posting/QR.coffee
Merge branch 'master' into noscript
Fix reloading bug.
Unify captcha module interfaces.
Detect when Javascript is disabled on the page and use the noscript captcha.
Merge branch 'master' into noscript
Release 4chan X v1.9.16.0.