Import errors during upload

[swehner]

When uploading videos several exceptions are printed.

WARNING - file_cache is unavailable when using oauth2client >= 4.0.0
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/googleapiclient/discovery_cache/__init__.py", line 36, in autodetect
    from google.appengine.api import memcache
ImportError: No module named 'google'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/googleapiclient/discovery_cache/file_cache.py", line 33, in <module>
    from oauth2client.contrib.locked_file import LockedFile
ImportError: No module named 'oauth2client.contrib.locked_file'

During handling of the above exception, another exception occurred:
...

Looks like this is related to googleapis/google-api-python-client#299