default.xml: adding ubuntu specific projects

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>

Conflicts:
	default.xml
default.xml: removing projects not needed for phablet from manifest

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>

Conflicts:
	default.xml
default.xml: ubuntu projects should use heads/master by default

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
default.xml: adding system/vold back, needed for manta

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>

Conflicts:
	default.xml
Adding back the chromium repo (needed to provide chromium_net)

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Add Ubuntu repo
Move modified repos to RockBuntu
add prestigio device repos