Updating isolation WP and bosons in decay container
Two updates for ATLASG-1511:
- Updating the isolation working points for photons to etcone20, etcone40, and ptcone30
- Moving the Wboson and decay collection to the general Bosons and decay collection, since this should really include W, Z, and H. Obviously no extra space for ttbar, a bit more for Z/H samples (but probably worth it...)