Restore translations in "krarc.protocol" because of a SVN_SILENT change

Note: The SVN_SILENT change can be seen in

https://cgit.kde.org/krusader.git/commit/?id=9e65dfd5f287c3dc256e042b4ea3d205fc00d2e5

Also, that opportunity was taken to add an "l" to a word so that the result is "Multiple".