frameworks: Smooth background gradient

Credit to UBER for the images

Change-Id: I3655e9917610348100fa6cb5cede66a63ca82538
Fixed the problem ime invisible status despite being the icon that appears in the statusbar.

[Reproduce the Path]
Precondition : Set "Auto-rotate screen" option to ENABLE

Calendar App lunch -> Rotate device to "Landscape" -> Touch "+" button(Add new Schedule)
-> Check the ime icons of the Status bar

Ime invisible status despite being the icon that appears in the statusbar.
Displays an icon in the status bar when the ime was actually visible state is modified to check.

Change-Id: If103ab909c5bfa6391eb51a696fb8b8f0b18808c
Improve AOSP Download/Upload animation

This increases the number of png required for a full download/upload animation cycle.
These new png makes the animations much smoother.
Use getRelativeDayString in getRelativeTimeSpanString.

The bug we're fixing here is that languages that don't
distinguish the "one" case grammatically (such as Japanese)
would say the equivalent of "In 1 day" rather than "Tomorrow"
because of the misuse of getQuantityString.

This has the side-effect of switching us over to the CLDR
strings for relative day names, which have consistent capitalization;
the Android donottranslate-cldr.xml strings varied even within
a language, so although this is a change, it seems like a step
in the right direction.

In a future change, we should actually push all relative
day formatting down into icu4c.

Bug: 7098707
Change-Id: Ia2f9af3d18c441d6093dd5da7956a3d0130e5b06