Update the print to a672691edbb6ac89ff8ca8c4c770f00c9c0f8503

from
https://github.com/camptocAMP/mapfish-print/tree/c2cgeoportal-1.3
Merge pull request #621 from camptocamp/fix-headers-print

Update the print to a672691edbb6ac89ff8ca8c4c770f00c9c0f8503
Use Travis and Coveralls
Merge pull request #629 from camptocamp/travis

Use Travis and Coveralls
Merge branch '1.3'

Conflicts:
	c2cgeoportal/scaffolds/update/print/print-servlet-2.0-SNAPSHOT-IMG-MAGICK.war
	doc/update_online.sh