Move the extending_theano documentation out of tutorial

Temp disable warn64

Really skip the flake8 part in "everything but tensor".

Fix last DLT problem(s) with the new backend.

A few small stuff

fixing make_node param passing for conv_grad (conv_transpose)

This was causing problems in the case of Pool, but I also fixed it elsewhere just to be sure.

Faster travis

Will re-enable when it is fixed.

Also add some missing tests (d3viz, typed_list).