Werk #10264: Discovery page: Fix missing "toggle all" checkboxes (1.6.0p2 regression)

Component	Setup
Title	Discovery page: Fix missing "toggle all" checkboxes (1.6.0p2 regression)
Date	Oct 17, 2019
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.0.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.6.0p6 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

To the list of all Werks