Make user API use the same regex as everyone else.

lms/djangoapps/api_manager/users/urls.py

 """ Users API URI specification """
+from django.conf import settings
 from django.conf.urls import patterns, url
 
 from rest_framework.urlpatterns import format_suffix_patterns
 
 from api_manager.users import views as users_views
 
+COURSE_ID_PATTERN = settings.COURSE_ID_PATTERN
+
+
 urlpatterns = patterns(
     '',
     url(r'^metrics/cities/$', users_views.UsersMetricsCitiesList.as_view(), name='apimgr-users-metrics-cities-list'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/grades$', users_views.UsersCoursesGradesList.as_view(), name='users-courses-grades-list'),
-    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/grades$', users_views.UsersCoursesGradesDetail.as_view(), name='users-courses-grades-detail'),
-    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/metrics/social/$', users_views.UsersSocialMetrics.as_view(), name='users-social-metrics'),
-    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/(?P<course_id>[^/]+/[^/]+/[^/]+)/completions/$', users_views.UsersCoursesCompletionsList.as_view(), name='users-courses-completions-list'),
-    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/(?P<course_id>[^/]+/[^/]+/[^/]+)$', users_views.UsersCoursesDetail.as_view(), name='users-courses-detail'),
-    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/(?P<course_id>[a-zA-Z0-9_+\/:]+)/grades$', users_views.UsersCoursesGradesDetail.as_view(), name='users-courses-grades-detail'),
-    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/(?P<course_id>[a-zA-Z0-9_+\/:]+)/metrics/social/$', users_views.UsersSocialMetrics.as_view(), name='users-social-metrics'),
-    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/(?P<course_id>[a-zA-Z0-9_+\/:]+)/completions/$', users_views.UsersCoursesCompletionsList.as_view(), name='users-courses-completions-list'),
-    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/(?P<course_id>[a-zA-Z0-9_+\/:]+)$', users_views.UsersCoursesDetail.as_view(), name='users-courses-detail'),
+    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/{0}/grades$'.format(COURSE_ID_PATTERN), users_views.UsersCoursesGradesDetail.as_view(), name='users-courses-grades-detail'),
+    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/{0}/metrics/social/$'.format(COURSE_ID_PATTERN), users_views.UsersSocialMetrics.as_view(), name='users-social-metrics'),
+    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/{0}/completions/$'.format(COURSE_ID_PATTERN), users_views.UsersCoursesCompletionsList.as_view(), name='users-courses-completions-list'),
+    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/{0}$'.format(COURSE_ID_PATTERN), users_views.UsersCoursesDetail.as_view(), name='users-courses-detail'),
+    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/{0}/grades$'.format(COURSE_ID_PATTERN), users_views.UsersCoursesGradesDetail.as_view(), name='users-courses-grades-detail'),
+    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/{0}/metrics/social/$'.format(COURSE_ID_PATTERN), users_views.UsersSocialMetrics.as_view(), name='users-social-metrics'),
+    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/{0}/completions/$'.format(COURSE_ID_PATTERN), users_views.UsersCoursesCompletionsList.as_view(), name='users-courses-completions-list'),
+    url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/{0}$'.format(COURSE_ID_PATTERN), users_views.UsersCoursesDetail.as_view(), name='users-courses-detail'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)/courses/*$', users_views.UsersCoursesList.as_view(), name='users-courses-list'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)/groups/*$', users_views.UsersGroupsList.as_view(), name='users-groups-list'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)/groups/(?P<group_id>[0-9]+)$', users_views.UsersGroupsDetail.as_view(), name='users-groups-detail'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)/preferences$', users_views.UsersPreferences.as_view(), name='users-preferences-list'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)/preferences/(?P<preference_id>[a-zA-Z0-9_]+)$', users_views.UsersPreferencesDetail.as_view(), name='users-preferences-detail'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)/organizations/$', users_views.UsersOrganizationsList.as_view(), name='users-organizations-list'),
-    url(r'^(?P<user_id>[a-zA-Z0-9]+)/roles/(?P<role>[a-z_]+)/courses/(?P<course_id>[a-zA-Z0-9_+\/:]+)$', users_views.UsersRolesCoursesDetail.as_view(), name='users-roles-courses-detail'),
+    url(r'^(?P<user_id>[a-zA-Z0-9]+)/roles/(?P<role>[a-z_]+)/courses/{0}$'.format(COURSE_ID_PATTERN), users_views.UsersRolesCoursesDetail.as_view(), name='users-roles-courses-detail'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)/roles/*$', users_views.UsersRolesList.as_view(), name='users-roles-list'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)/workgroups/$', users_views.UsersWorkgroupsList.as_view(), name='users-workgroups-list'),
     url(r'^(?P<user_id>[a-zA-Z0-9]+)$', users_views.UsersDetail.as_view(), name='apimgr-users-detail'),