Added model and dao for Jobs.

app/dao/jobs_dao.py

@@ -0,0 +1,19 @@
+from app import db
+from app.models import Job
+
+
+def save_job(job):
+    db.session.add(job)
+    db.session.commit()
+
+
+def get_job_by_id(id):
+    return Job.query.get(id)
+
+
+def get_jobs_by_service(service_id):
+    return Job.query.filter_by(service_id=service_id).all()
+
+
+def get_jobs():
+    return Job.query.all()