discord: proper desktop file position and install less

This allows Discord to be lanched from the desktop/start menu, amd
prevents unneeded files from being installed on the users machine.

srcpkgs/discord/patches/discord.desktop.patch

@@ -0,0 +1,8 @@
+*** discord.desktop
+--- discord.desktop
+*************** GenericName=Internet Messenger
+*** 6 ****
+! Exec=/usr/share/discord/Discord
+--- 6 ----
+! Exec=/usr/lib/discord/Discord
+

srcpkgs/discord/template

@@ -3,7 +3,7 @@
 
 pkgname="discord"
 version="0.0.1"
-revision=2
+revision=3
 depends="alsa-lib dbus-glib gtk+3 GConf libnotify nss libXtst"
 wrksrc="Discord"
 only_for_archs="x86_64"
@@ -16,14 +16,19 @@ license="proprietary"
 homepage="https://discordapp.com"
 distfiles="https://dl.discordapp.net/apps/linux/${version}/discord-${version}.tar.gz"
 checksum="ba0ff3c57d7ab3a5e47a91bd23a79758085147e88fa0c65529bcf50a778fa382"
+_package_location="/usr/lib/$pkgname"
 
 do_install() {
 	vmkdir /usr/share/pixmaps
 	vcopy discord.png /usr/share/pixmaps/
-	vmkdir /usr/lib/$pkgname
-	vcopy * /usr/lib/$pkgname
+	vmkdir /usr/share/applications
+	vcopy discord.desktop /usr/share/applications/
+	vmkdir ${_package_location}
+	for item in locales resources Discord libffmpeg.so libnode.so natives_blob.bin snapshot_blob.bin content_shell.pak icudtl.dat; do
+		vcopy "${item}" "${_package_location}"
+	done
 	vmkdir /usr/bin
-	ln -sfr $DESTDIR/usr/lib/$pkgname/Discord $DESTDIR/usr/bin/discord
+	ln -sfr $DESTDIR${_package_location}/Discord $DESTDIR/usr/bin/Discord
 }
 post_install() {
 	vlicense $FILESDIR/LICENSE