add judge_server related api

conf/migrations/0003_judgeserver.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.10 on 2016-11-19 14:27
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('conf', '0002_auto_20161119_1657'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='JudgeServer',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('hostname', models.CharField(max_length=64)),
+                ('ip', models.CharField(max_length=32)),
+                ('judger_version', models.CharField(max_length=24)),
+                ('cpu_core', models.IntegerField()),
+                ('memory_usage', models.FloatField()),
+                ('cpu_usage', models.FloatField()),
+                ('last_heartbeat', models.DateTimeField()),
+                ('create_time', models.DateTimeField(auto_now_add=True)),
+                ('task_number', models.IntegerField()),
+            ],
+            options={
+                'db_table': 'judge_server',
+            },
+        ),
+    ]

conf/migrations/0004_auto_20161120_1834.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.10 on 2016-11-20 10:34
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('conf', '0003_judgeserver'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='judgeserver',
+            name='service_url',
+            field=models.CharField(blank=True, max_length=128, null=True),
+        ),
+        migrations.AlterField(
+            model_name='judgeserver',
+            name='ip',
+            field=models.CharField(blank=True, max_length=32, null=True),
+        ),
+    ]

conf/migrations/0005_judgeservertoken.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.10 on 2016-11-20 11:00
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('conf', '0004_auto_20161120_1834'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='JudgeServerToken',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('token', models.CharField(max_length=32)),
+            ],
+            options={
+                'db_table': 'judge_server_token',
+            },
+        ),
+    ]