homescreen-service: add five verbs. 1.showWindow: instead of tap_shortcut and show onscreen. 2.hideWindow: used when want to hide onscreen. 3.replyShowWindow: used when post onscreen reply information to application. 4.showNotification: used by application who want to display notification on homescreen top area. 5.showInformation: used by application who want to display information on homescreen botton area. homescreen: 1.add fullscreen transfer button. 2.display notification and information. Bug-AGL: SPEC-1931 Change-Id: Ie0753fe0656282b1ff8c04dcef625f2a4154edde Signed-off-by: wang_zhiqiang <wang_zhiqiang@dl.cn.nexty-ele.com>