Changed version number to 1.5.
Updates to handle the Chines translation, credit to translators.
Updated the Italian translation.
Update CMakeList.txt to correctly handle the Traditional Chinese language.
Updated some translations.
Added an empty Swedish translation.
Added to the translation files new strings to be translated.
Updated the Russian translation. Thanks to Vyacheslav Dikonov.
Fixed: the program crashed if the user cataloged a volume using an existing name.
Updated copyright and web link in the About dialog.