add tray icon
input through complete
add set_visible
Merge branch 'dev' of github.com:linuxdeepin/deepin-notifications into dev

Conflicts:
	src/ui/tray.py
database added
briefviewwindow almost done
briefviewwindow almost done
briefwin basic, statusicon change on click
new window implement and hyperlink
feature's all done
bug test
fix bug detailwindow listview items twist each other
replace buttons with scroll
dynamicly update window view when deleting items
bug fixed body content won't drawn out of window ever ever ever again
add alert dialog, but skin window bug shows up..
bug fixed empty label not in center when window is toggled maxmum, and new style like deepin-system-settings created
Change with deepin-ui's api.
new style brief begin
new style unread window view completed