add minappversion

Model/models.py

@@ -443,6 +443,7 @@ class App_Info(models.Model):
     appName = models.CharField(blank=True, max_length=32, verbose_name=u'app名称')
     systemLanguage = models.CharField(blank=True, max_length=32, verbose_name=u'系统语言')
     newAppversion = models.CharField(blank=True, max_length=12, verbose_name=u'系统版本')
+    minAppversion = models.CharField(blank=True,default='', max_length=12, verbose_name=u'系统版本')
     bundleVersion = models.CharField(blank=True, max_length=12, verbose_name=u'项目版本')
     content = models.TextField(blank=True, default='', verbose_name=u'更新内容')
     app_type = models.IntegerField(default='', blank=True, verbose_name=u'app类型')