Added <align>center</align> to the <buttonlist name="archivelist"
under the exportnative window in mythnative-ui.xml.
The selectbar now stays centered regardless of number of items.

Various tweaks to mytharhive.
( scaling fixes etc )

modified:   mytharchive-ui.xml
modified:   mythburn-ui.xml
modified:   mythnative-ui.xml
Bumped version to 4.41.

modified:   themeinfo.xml