refs #3323 some ubuntu precise simply output ubuntu, lets try to widen the...

refs #3323 some ubuntu precise simply output ubuntu, lets try to widen the boxes that can run static images in tests

PS: all pdf tests on my box!

git-svn-id: http://dev.piwik.org/svn/trunk@7675 59fd770c-687e-43c8-a1e3-f5a4ff64c105