Make sure project namespace is used instead of project name

[nuwang]

Currently, some places in the code is using project.name instead of project.namespace, which results in errors if the project.name has spaces or is not RFC1123 compliant.
It looks like we also need more than just project.name in the context. Have added the following:

context.project.name
context.project.namespace
context.project.access_path

Will probably need the domain name in the context too.

[coveralls]

Coverage decreased (-0.02%) to 94.096% when pulling 20e3ffb on use_project_namespace into 173ad5e on master.