Werk #11859: Fix handling of upper case characters in login _origtarget

Component	User interface
Title	Fix handling of upper case characters in login _origtarget
Date	Dec 18, 2020
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.1.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 2.0.0b3 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.6.0p20 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

URLs with upper case characters were rejected by the validation mechanism of the argument.

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