Rectify the remaining tests that fail due to addition of the cache-buster string.
Rectify the remaining tests that fail due to addition of the
cache-buster string.

Also, return 'client should fail login with case-altered username' test
to properly expect 403, SpiderOak's "authentication failed", as well as
providing for the cache-busted target URL.

SpiderOak/SpiderOakMobileClient,SpiderOak/SpiderOakMobileClient,antoniodesouza/SpiderOakMobileClient,antoniodesouza/SpiderOakMobileClient