Werk #7343: Fixed broken Dokuwiki CSS with newer PHP versions

Component	Other components
Title	Fixed broken Dokuwiki CSS with newer PHP versions
Date	May 1, 2019
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.6.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.5.0p17 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

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