CppreferenceDoc: update output.txt

 * The entries in the file are now sorted in a deterministic order.
 * The 'c++' prefix of the titles was removed.
 * Remove multiple newlines in code snippets.
 * Do not add <br/> between code snippet and the description.
CppreferenceDoc: update output.txt

 * handle 'i.e.' and 'that is,' as a special case
 * remove long text snippets in parentheses
 * increase the description length limit to 200 characters
 * make sure the description never contains any newlines
 * properly ignore the size of the markup tags in the calculation of the limit
 * make sure we don't cut the description at a markup tag
 * make sure we don't cur the description at the middle of a word
 * trim the description at the first dot, not the last
CppreferenceDoc: update output.txt

 * implement handling of 'd,d' numbering in lists
 * fix handling of short summaries
CppreferenceDoc: update output.txt

 * add entries that were not processed due to incorrect CSS class matching
CppreferenceDoc: update output.txt

* show multiple declarations if there's enough space
CppreferenceDoc: update output.txt and download location