support unicode course names for bulk email (LMS-2118)
Use unicode course titles for bulk email tests
Detached pages from XML courses are set to appropriate descriptor class (LMS-2094)

Add tests
Merge pull request #2375 from edx/adam/lms2118-bulk-email-unicode-errors

Adam/lms2118 bulk email unicode errors
Merge pull request #2374 from edx/hotfix/2014-01-30

Hotfix deployed to Edge Production and Production on 2014-01-31, merging PR to release branch.