jira: new
1. Refactor the UI:
put dailytips into slicing notification
add image for dailytips
adjust Layout and UI control
adapts retina scale, adapts dark mode color
2. New Features
ability to expand/collapse the dailytips
ability to freely go to next/prev page of dailytips
show a random dailytip each time when begin to slice
ability to remember the default statet add .
of whether expand the dailytips
3. Remove original hintNotification related logic
Change-Id: I99bfa8c19c9417d25cb2f6e205f5e66b7680b189
liz.li