main/acf-core: upgrade to 0.8.4

(cherry picked from commit c82754f2)

main/acf-core/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=acf-core
-pkgver=0.8.3
+pkgver=0.8.4
 pkgrel=0
 pkgdesc="A web-based system administration interface framework"
 url="http://git.alpinelinux.org/cgit/acf-core"
@@ -12,4 +12,4 @@ build() {
 	cd "$srcdir/$pkgname-$pkgver"
 	make DESTDIR="$pkgdir" install
 }
-md5sums="96cb3feb5f3ad472f58ca79018a16dad  acf-core-0.8.3.tar.bz2"
+md5sums="034876d08d945fb2636087a4df7e9e6b  acf-core-0.8.4.tar.bz2"