Cleanup manifest

* Sort
* Update groups from AOSP
* Remove projects that were removed from AOSP or were unused:
  external/dropbear
  external/qrngd
  hardware/nvidia/tegra124
* Remove some ancient/unused projects:
  packages/apps/LegacyCamera
  packages/apps/Phone
  packages/apps/QuickSearchBox
  packages/providers/ApplicationsProvider

Change-Id: I8ef5f29705cc0cab77f5b42b12d13b925de07d8a