Werk #5177: Added missing change entry when editing customers

Component	Setup
Title	Added missing change entry when editing customers
Date	Sep 4, 2017
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.5.0i1 Checkmk MSP (CME)

Editing the properties of a customer was not adding a change entry to WATO.

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