Werk #2001: Fix exception of missing .site when editing a non-existing host

Component	Setup
Title	Fix exception of missing .site when editing a non-existing host
Date	Feb 20, 2015
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.7i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

To the list of all Werks