Requirements updates for Track Changes

* Manually update ORA2 version to the TrackChanges SHA1
** Note this should be reverted when the TrackChanges PR merges upstream
* Includes submissions dependency bump to 0.0.7

requirements/edx/base.txt

@@ -134,4 +134,4 @@ git+https://github.com/mfogel/django-settings-context-processor.git
 git+https://github.com/mitocw/django-cas.git
 
 # edX packages
-edx-submissions==0.0.3
+edx-submissions==0.0.7

requirements/edx/github.txt

@@ -27,7 +27,7 @@
 -e git+https://github.com/edx/bok-choy.git@82b4e82d79b9d4c6d087ebbfa26ea23235728e62#egg=bok_choy
 -e git+https://github.com/edx-solutions/django-splash.git@9965a53c269666a30bb4e2b3f6037c138aef2a55#egg=django-splash
 -e git+https://github.com/edx/acid-block.git@459aff7b63db8f2c5decd1755706c1a64fb4ebb1#egg=acid-xblock
--e git+https://github.com/edx/edx-ora2.git@release-2014-08-08T13.47#egg=edx-ora2
+-e git+https://github.com/Stanford-Online/edx-ora2.git@302ca7a03bb8d9e147dccee4c161d0c4016a2b4c#egg=edx-ora2
 -e git+https://github.com/edx/opaque-keys.git@c63412fc939cd094ddbc9c2ef71acb345e3b4eb7#egg=opaque-keys
 -e git+https://github.com/edx/ease.git@97de68448e5495385ba043d3091f570a699d5b5f#egg=ease
 -e git+https://github.com/edx/i18n-tools.git@f5303e82dff368c7595884d9325aeea1d802da25#egg=i18n-tools