Refs #8460 - HTML ID without space. Add some doc to functions.

2 jobs for B8460DropdownMenuMultipleS in 2 minutes and 43 seconds (queued for 1 second)
Name Stage Failure
failed
snapshot Build
+'<span class="dropdown"><span title="Details" data-toggle="dropdown" aria-haspopup="true" aria-expanded="true" class="dropdown-toggle" id="dd_5cf98b36647f1" ><span class="glyphicon glyphicon-option-vertical" ></span></span><ul style="max-height: 70vh; overflow-y: auto" class="dropdown-menu" aria-labelledby="dd_5cf98b36647f1"></ul></span>'

/home/gitlab-runner/builds/z2S3Mwv6/0/typo3/qfq/typo3conf/ext/qfq/Tests/unit/core/report/LinkTest.php:1472

FAILURES!
Tests: 342, Assertions: 1988, Failures: 1.
Makefile:105: recipe for target 'phpunit' failed
make: *** [phpunit] Error 1
ERROR: Job failed: exit status 1