avoid NPE if no version
avoid NPE if no version
fix bug where sometimes closing a dialog resulted in an unusuable web page due to the fade modal hanging around
if there are no versions to switch to, show a little dialog to help you create a new version
if there are no versions to switch to, show a little dialog to help you create a new version
short versions nicely across various numeric version strings with dots and large numbers
make it easy to create new versions from the wiki
make it easy to create new versions from the wiki