[devtools] CubicWebTC._check_html may have to deal with unicode or bytes If called with template=None, CubicWebTC.view will not go through main-template, and return the unicode data from the view directly instead of encoded data.

usr/lib/python2*/*-packages/cubicweb/web
usr/lib/python2*/*-packages/cubicweb/wsgi
usr/share/cubicweb/cubes/shared/data
usr/share/cubicweb/cubes/shared/wdoc