Saving panorama starts automatically.

1. Saving process starts right after low-res result is generated.
2. Progress bar for panning stops updating after capturing.
3. Fixed the issue that progress bar for panning will show a indicator on the left side first when
there should be nothing shown on the screen.

Change-Id: I68a60b01035939d92bebe5ee59d63a27dfccc3c6
7 files changed