Updated čeština Translation

git-svn-id: svn://svn.jdownloader.org/jdownloader/trunk@25736 ebf7c1c2-ba36-0410-9fe8-c592906822b4
Updated 日本語 Translation

git-svn-id: svn://svn.jdownloader.org/jdownloader/trunk@25737 ebf7c1c2-ba36-0410-9fe8-c592906822b4
DownloadLink: added getLastAvailableStatusChange

git-svn-id: svn://svn.jdownloader.org/jdownloader/trunk@25738 ebf7c1c2-ba36-0410-9fe8-c592906822b4