Cleanup for r40944:

Cleanup for r40944:
* Break up giant long incomprehensible line
* Use SpecialPage::getTitleFor() rather than Title::newFromText() so we get proper localization of special page name
* No need to pass 'block' to Special:Log twice; just put it in the query to match actual paging behavior
* HTML-escape the blocklog-fulllog message for good measure
* No need to pass 'known' option to linker -- it knows that Special: pages are good