firmware bump: 7490 113.05.57 rev26255, by Philantrop (closed #2196)
* disable 7490 labor (refs #2180)
* for still missing sources write to {{{fritzbox_info@avm.de}}}

git-svn-id: file:///var/svn/freetz/trunk@11058 149334a1-2f27-0410-a3b9-fc62619ac1e6