Issue:Categorymatch=with apostrophe

Description:	categorymatch desn't find cats with '
Extension / Version:	DPL   /   1.7.6+ (at least)
Type / Status:	Bug   /   open

Problem

• Muha Test 2

{{#dpl:
|categorymatch=Test'd funk
}}

This doesn't find Muha Test 2. While category= does.

• Muha Test 2

{{#dpl:
|category=Test'd funk
}}