Fix formatting errors in site module according to PEP8
Fix formatting errors in site module according to PEP8

Fixed the following format errors:
site/tests.py:90:19: E221 multiple spaces before operator

Testing Done:
Ran unit tests for site module, and pep8.

Reviewed at https://reviews.reviewboard.org/r/6637/

brennie/reviewboard,reviewboard/reviewboard,beol/reviewboard,custode/reviewboard,brennie/reviewboard,reviewboard/reviewboard,brennie/reviewboard,KnowNo/reviewboard,sgallagher/reviewboard,KnowNo/reviewboard,KnowNo/reviewboard,sgallagher/reviewboard,beol/reviewboard,reviewboard/reviewboard,bkochendorfer/reviewboard,reviewboard/reviewboard,brennie/reviewboard,davidt/reviewboard,beol/reviewboard,bkochendorfer/reviewboard,custode/reviewboard,custode/reviewboard,chipx86/reviewboard,davidt/reviewboard,davidt/reviewboard,chipx86/reviewboard,KnowNo/reviewboard,bkochendorfer/reviewboard,bkochendorfer/reviewboard,beol/reviewboard,chipx86/reviewboard,sgallagher/reviewboard,custode/reviewboard,davidt/reviewboard,chipx86/reviewboard,sgallagher/reviewboard