tmf: Add missing Javadoc to tmf.ui

tmf: Add missing Javadoc to tmf.ui

This goes a long way into fixing the remaining warnings!

This commit contains only documentation and formatting fixes,
no actual code changes. Except for some protected fields in
TmfEventsTable, which were changed to private to remove them
from the API.

Change-Id: I6c524c9e9b91f0efafad739cec62aa7d60429972
Signed-off-by: Alexandre Montplaisir <alexmonthy@voxpopuli.im>
Reviewed-on: https://git.eclipse.org/r/9463
Tested-by: Hudson CI
Reviewed-by: Patrick Tasse <patrick.tasse@gmail.com>
IP-Clean: Patrick Tasse <patrick.tasse@gmail.com>