Revert "admins.pp - tabs -> spaces & alignment."

I'm sorry, but without a clear diff (especially of the other change) noone can properly review this...

Self merging huge changes to admins.pp is also problematic.

This reverts commit 4af9d073a8ef49cf69c957f829efc73b36fa4f24.

Change-Id: I6d6cfe5bf68604dd95d20f889d844c1f69456ff3