Is there any change to translate the blog tools from English to German or to another language?
As far I Know, you can get this if you install the extra language pack for German or other languages. You can't just change it for blogs tool even with LPs.
when you create a site collection or a site and select a language, the user interface text that appears on the site collection or site is shown in the selected language. For example, when you create a site in French, the toolbars, navigation bars, lists, and column headings for that site appear in French. Likewise, if you create a site in Arabic, the site administration pages and user interface, such as toolbars, navigation bars, lists, and column headings for that site, appear in Arabic, and the default left-to-right orientation of the site changes to a right-to-left orientation to correctly show Arabic text.