Added option to approve multiple contest in Admin Dashboard

Author: vaibhavsingh97

Diff for: oshc/main/admin.py

@@ -10,5 +10,14 @@ class chatSessionAdmin(admin.ModelAdmin):
     list_display = ('title', 'start_date')
 
 
+class contestAdmin(admin.ModelAdmin):
+    list_display = ('name', 'link', 'description', 'start_date', 'end_date', 'approved')
+    actions = ['approve_contest']
+
+    def approve_contest(modeladmin, request, queryset):
+        queryset.update(approved=True)
+    approve_contest.short_description = "Approve"
+
+
 admin.site.register(chatSession, chatSessionAdmin)
-admin.site.register(Contest)
+admin.site.register(Contest, contestAdmin)