main/postmarketos-ui-phosh: add firefox config (MR 1445)

Replace firefox with firefox-esr, remove epiphany. With the current
version of epiphany, the postmarketOS wiki doesn't even load every time,
so that's not something we want to ship.

main/postmarketos-ui-phosh/APKBUILD

@@ -17,8 +17,7 @@ depends="bluez
 	"
 _pmb_recommends="calls
 	chatty
-	epiphany
-	firefox
+	firefox-esr
 	gedit
 	gnome-calculator
 	gnome-clocks
@@ -26,6 +25,7 @@ _pmb_recommends="calls
 	gnome-software
 	kgx
 	postmarketos-artwork-wallpapers
+	postmarketos-config-firefox
 	postmarketos-hidden-desktop-entries
 	postmarketos-welcome-gtk3
 	xdg-user-dirs