[后台题目管理的api部分] 增添创建题目、编辑题目API及测试用例

oj/settings.py

@@ -50,6 +50,7 @@ INSTALLED_APPS = (
     'announcement',
     'utils',
     'group',
+    'problem',
 
     'rest_framework',
     'rest_framework_swagger',

oj/urls.py

@@ -9,6 +9,7 @@ from account.views import (UserLoginAPIView, UsernameCheckAPIView, UserRegisterA
 from announcement.views import AnnouncementAPIView, AnnouncementAdminAPIView
 from group.views import GroupAdminAPIView
 from admin.views import AdminTemplateView
+from problem.views import ProblemAdminAPIView
 
 urlpatterns = [
     url("^$", TemplateView.as_view(template_name="oj/index.html"), name="index_page"),
@@ -33,4 +34,6 @@ urlpatterns = [
     url(r'^problems/$', TemplateView.as_view(template_name="oj/problem/problem_list.html"), name="problem_list_page"),
     url(r'^admin/template/(?P<template_dir>\w+)/(?P<template_name>\w+).html', AdminTemplateView.as_view(), name="admin_template"),
     url(r'^api/admin/group/$', GroupAdminAPIView.as_view(), name="group_admin_api"),
+
+    url(r'api/admin/problem/$', ProblemAdminAPIView.as_view(), name="problem_admin_api"),
 ]