Removed enrollment warnings, fixes DOC-1126
Merge pull request #192 from edx/ahodges/doc/DOC1126

Removed enrollment warnings, fixes DOC-1126
Compiling SEGMENT_IGNORE_EMAIL_REGEX on app start

Compilation at app start will ensure we don't crash during a user request due to a malformed regex. The view has been updated to return a simple boolean.
Added User Admin
Added Course Homepage