Update CoRoT-25.xml

added lastupdate
source http://www.aanda.org/articles/aa/pdf/2013/07/aa21462-13.pdf
Update CoRoT-26.xml

added lastupdate
source http://www.aanda.org/articles/aa/pdf/2013/07/aa21462-13.pdf
Merge pull request #418 from Sol-d/patch-24

Patch 24