修改JSON
將sponsor appearance和keynote合併
	modified:   2014/index.html
	modified:   2014/mobile/schedule1_auditorium.json
	modified:   2014/mobile/schedule1_hall.json
	modified:   2014/mobile/schedule2_auditorium.json
	modified:   2014/mobile/schedule2_hall.json
	modified:   2014/mobile/speakers.json