Add AI algorithm configuration to LMS settings

Added ORA2_FILE_PREFIX setting
ORA2 release-2014-06-23T13.19

Conflicts:

	requirements/edx/github.txt
Updating settings and requirements for lms and cms to support file upload
Updating AWS settings

Conflicts:

	requirements/edx/github.txt
Merge pull request #151 from yokose-ks/EDX-497

EDX-497: Modify settings for latest ORA2