Modified postmarketos-demo as discussed on IRC: (#1082)

Removed shutdown (as weston isn't running as root anymore)
Changed the firefox button to state that firefox needs to be installed

aports/main/postmarketos-demos/APKBUILD

 pkgname=postmarketos-demos
-pkgver=5
-pkgrel=1
+pkgver=6
+pkgrel=0
 pkgdesc="Simple touch menu for a few demo programs"
 url="https://github.com/postmarketOS"
 arch="all"
@@ -20,5 +20,5 @@ package() {
 	install -D -m755 "$srcdir"/postmarketos-demos \
 		"$pkgdir"/usr/bin/postmarketos-demos
 }
-sha512sums="f9093f79a1ae189637269318d7001b619d35ad68b291b7979de2f619f74bdb4cc6779dd2f98962fa1ba17b65c0d5b84dac5cd99c35b9b24fae00e65ab68d664d  main.c
+sha512sums="48db2907ea609bcdafd321aa8659a387ad6325641e01fd83d91be5d320eb6202ab628b73d914658333396e7751e1e283aed413db7e91cce2d782993ef38a7e05  main.c
 83d8a95e9e1e95dffa8661e547444e83e72e572dcd0c637376f678bbd20a351c4b971a315311edefeb58a4cca14fd3e586fb581a262b2d217e25092459539b98  Makefile"

aports/main/postmarketos-demos/main.c

@@ -16,11 +16,9 @@ static void activate(GtkApplication *app, gpointer user_data)
 	gtk_container_add(GTK_CONTAINER (window), button_box);
 
 	const char *programs[] = {
-		"Shutdown",
-			"poweroff &",
 		"GTK3 Demo",
 			"gtk3-demo &",
-		"Firefox (XWayland)",
+		"Firefox (XWayland, needs to be installed)",
 			"firefox &",
 		"weston-presentation-shm (Animation)",
 			"weston-presentation-shm &",