layers.txt: bump oe-core, meta-oe, meta-qt5 and meta-smartphone a bit

* includes qt5 upgrade to 5.4

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
meta-smartphone, meta-webos-ports: Use jansa/dizzy branches

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>