Resolve "Adding appointment"

Closes #40 (closed)

smash/web/static/js/appointment.js

+function appointment_type_begaviour(selectObj, outObject,api_call) {
+  var appointment_types_data = null;
+
+  function get_appointment_type_by_id(id) {
+    for (var i=0 ;i <appointment_types_data.length;i++) {
+      if (id == appointment_types_data[i].id) {
+        return appointment_types_data[i];
+      }
+    }
+    return null;
+  }
+  function compute_time(object) {
+    var vals = object.val();
+    var time = 0;
+    var max_paralel_time = 0;
+    for (var i=0;i<vals.length;i++) {
+      var appointment_type = get_appointment_type_by_id(vals[i]);
+      if (appointment_type== null) {
+        console.log("Cannot find appointment type with id: "+vals[i]);
+      } else {
+        if (appointment_type.can_be_parallelized) {
+          max_paralel_time = Math.max(max_paralel_time,appointment_type.default_duration);
+        } else {
+          time +=appointment_type.default_duration;
+        }
+      }
+    }
+    time = Math.max(time, max_paralel_time)
+    $(outObject).val(time+"");
+  }
+  $(selectObj ).change(function() {
+    var object = $(this)
+    if (appointment_types_data===null) {
+      $.get(api_call, function(data) {
+        appointment_types_data= data.appointment_types;
+        compute_time(object);
+      });
+    } else {
+      compute_time(object);
+    }
+
+  });
+
+}