Bug 7143: [QA Follow-up] Adjusting developer information

Bug 7143: [QA Follow-up] Adjusting developer information

For consistency we should not only add firstnames to the list of
developers in about.tt and history.txt.

Adding some surnames with the help of git log and Bugzilla. Also
corrected a closing li tag.
Note that I did not find one surname: Natasha of Catalyst Academy.
Probably Chris could add that missing piece.

NOTE: Natasha piece still needs clean up.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>