support a custom UI theme Change-Id: Ic2f25fcc4620b06710c3ff1f26f84aba43881762
support custom locale language and custom support languages. Change-Id: Ia235cb83b65c8530449f52d9ea575c3d6f603f04
Add config/config.yaml to set default configurations. Use the config/local_config.yaml to set the custom configurations Change-Id: I22049e478b6440c765751c8f17663f36f33c277a