Werk #3867: filter 'Servicegroup (Regex)' can be negated

Component	User interface
Title	filter 'Servicegroup (Regex)' can be negated
Date	Aug 31, 2016
Level	Trivial Change
Class	New Feature
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.4.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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