webos-image: Update layer pins for 2013-09-26

meta-webos as of 2013-09-26 14:00:27 -0700

0808deb webos-image: activitymanager=115,v3.0.0
9c3c65b meta-webos: db8=87,v3.1.0
9ac341a webos-image: Update for change in format of SetEnvInit.conf
f1104bb qmake5.bbclass: Add WEBOS_INSTALL_PREFIX

Open-webOS-DCO-1.0-Signed-off-by: Susan Montooth <susan.montooth@lge.com>