Bug 7143: Cleaning up docs/history.txt

Sorting some lines on date
Typo on date for Bernardo Kriegel
Splitting one line in 2008 in two lines
Replacing some tabs with spaces in October 2013

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
No typos or problems found.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>