Add models for metric manuel checking.

src/biomon/models.py

@@ -152,3 +152,18 @@ class Patient(Person):
             self.alert_profile = None
             self.save()
             return None
+
+
+class MetricCheck(models.Model):
+    patient = models.ForeignKey(Patient, verbose_name=_(u'Patient'))
+    date = models.DateField(_(u'Date of check'))
+    time = models.TimeField(_(u'Time of check'))
+
+
+class TemperatureCheck(MetricCheck):
+    value = models.DecimalField(verbose_name=_(u'Value'),
+        max_digits=3, decimal_places=1)
+
+
+class HeartrateCheck(MetricCheck):
+    value = models.IntegerField(_(u'Value'))