Remove some unused imports
Add use_vcr decorator to test suite
Refactor domain_delay handling so that it can be mocked away
Switch all online tests to use vcr.py
Add vcr.py to jenkins requirements
Remove some unused imports
Set vcr record mode to none for travis
use_vcr will pass cassette as argument into function
Add 'off' mode for vcr
Add test for imdb_lookup caching
Merge pull request #364 from Flexget/vcrpy

VCR.py
Fix urllib3 warning filtering on older versions of urllib3
Merge branch 'develop' into parsing_cleanup