[windowz414: Port to halogenOS product overlays instead of directly modifying Launcher3 sources.]

Change-Id: Ibe1d1ea3db3e90302ce438b15a65c04936f3b20d
Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
Signed-off-by: Beru Hinode <windowz414@1337.lgbt>