Werk #7248: Fixed invalid expected duration on "Activate Changes" page

Component	Setup
Title	Fixed invalid expected duration on "Activate Changes" page
Date	Mar 21, 2019
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.6.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.5.0p14 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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