xblock-mentoring: Add repository to requirements & installed apps

Adding to installed Django applications is required due to the use
of a Django model by the XBlock

cms/envs/common.py

@@ -472,6 +472,9 @@ INSTALLED_APPS = (
     # for course creator table
     'django.contrib.admin',
 
+    # XBlocks containing migrations
+    'mentoring',
+
     # for managing course modes
     'course_modes',
 

lms/envs/common.py

@@ -1164,6 +1164,9 @@ INSTALLED_APPS = (
     'reverification',
 
     'embargo',
+
+    # XBlocks containing migrations
+    'mentoring',
 )
 
 ######################### MARKETING SITE ###############################

requirements/edx/edx-private.txt

+# Requirements for edx.org that aren't necessarily needed for Open edX.
+
 -e git+ssh://git@github.com/jazkarta/edX-jsdraw.git@df9d048e331a642193e5aa2e03650fb84a9d715f#egg=edx-jsdraw
+-e git+https://github.com/gsehub/xblock-mentoring.git@69a546eadeb4d038f6851bb54286c6c6fdbe8c87#egg=xblock-mentoring