Added length of appointment to config + fixed appointments not showing in scheduling modal + added appointment confirmation template. BOD-141 BOD-149 BOD-148

client/templates/appointment_confirmation/appointment_confirmation.query.gql

@@ -0,0 +1,11 @@
+query EMAIL_APPOINTMENT_CONFIRMATION($id: uuid!) {
+  appointments_by_pk(id: $id) {
+    start
+    title
+    job {
+      ownr_fn
+      ownr_ln
+      ownr_ea
+    }
+  }
+}