TYPO3 Core

Problem:
The t3lib_arraybrowser issues some warning when running the source through tidy.

Solution:
- a escaping malformed URI reference: Tons of a hrefs use $ and '. Escape them with urlencode properly
- trimming empty b: There are empty b tags if a key has no value. Omit the b tag if there is no content
- a cannot copy name attribute to id: The name attribute is deprecated and we should use id instead. The id's are unique, created by md5, but must not start with a number. Solution is to switch to id and add "a" as first character.

Notes:
The arraybrowser is only used in the configuration, aka lowlevel module in core.

(issue imported from #M12618)