Don't break validation for view with no specific context.

[bsuttor]

Sometimes, context is a view and has no portal_type

[coveralls]

Coverage increased (+0.002%) to 40.714% when pulling bdd878e on IMIO:master into 8e6beff on RedTurtle:master.

[cekk]

@bsuttor I don't know why the coverage script for 4.3 breaks the build.
Seems not properly configured because it tries to check the coverage of all dependencies, not only this package.
Could you please try to disable it in .travis.yml and commit?
I don't really care about it

[coveralls]

Coverage increased (+0.002%) to 40.714% when pulling b68e299 on IMIO:master into 8e6beff on RedTurtle:master.

[coveralls]

Coverage increased (+0.002%) to 40.714% when pulling c940df5 on IMIO:master into 8e6beff on RedTurtle:master.

[coveralls]

Coverage increased (+0.002%) to 40.714% when pulling fa52ef5 on IMIO:master into 8e6beff on RedTurtle:master.

[bsuttor]

@cekk
I tried to properly configure coverage for Plone 4 and Plone 5 (with .coveragerc file), but I'm not able to get it works.
So I just comment Plone 4 travis tests, as you asked.

[cekk]

:(
Ok, i can try to fix it later.

coveralls isn't really important for me.

btw thanks for this pr!

[bsuttor]

It seems using

bin/coverage run bin/test
instead of
bin/createcoverage run bin/test

should fix travis coverage error ;-)