Do not delete event and fires doclets
Do not loop through parents

Now that we use the parseComplete event, we walk through all
doclets in the loop anyway.
Clean up

Only mark symbol as unexported when it is not in the API, and
no longer extract links from fires annotations because all links
are handled now.
Use a more visually appealing margin for descriptions
Merge pull request #1906 from ahocevar/fix-event-docs

Do not delete event and fires doclets