7.0 metafiles

But it is what the error message says lines 3151:
https://travis-ci.org/OCA/account-financial-reporting/jobs/31817934#L3151

except_osv: (u'Wkhtmltopdf library path is not set', u'Please install executable on your system (sudo apt-get install wkhtmltopdf) or download it from here: http://code.google.com/p/wkhtmltopdf/downloads/list and set the path in the ir.config_parameter with the webkit_path key.Minimal version is 0.9.9')