start the PowerSaver service if activated
Fix icons overflowing status bar view in center clock and date layout

Based on @maxwen commits
1 - https://github.com/maxwen/frameworks_base/commit/5b4d7714ea5fcc493712b569f456f655bf696076
2 - https://github.com/maxwen/frameworks_base/commit/5b4d7714ea5fcc493712b569f456f655bf696076
3 - https://github.com/maxwen/frameworks_base/commit/b5f7820e50fd03522b5462777779a4520594c796

All credits goes to him.

Change-Id: I23be4b166941159d6b5891442bfcefa3678a0603