#7 New Form

* adds NewEmaForm and EditEmaForm
* refactors ResponsibilityData related form fields into reusable mixin CompensationResponsibleFormMixin
   * used in NewEcoAccountForm and NewEmaForm for easier maintaining and reducing amount of code
* refactors templates /xy/new/view.html into /xy/form/view.html since the same template file is used for new and edit forms

ema/templates/ema/detail/includes/controls.html

@@ -24,7 +24,7 @@
             {% endif %}
         {% endif %}
         {% if is_default_member %}
-        <a href="{% url 'home' %}" class="mr-2">
+        <a href="{% url 'ema:edit' obj.id %}" class="mr-2">
             <button class="btn btn-default" title="{% trans 'Edit' %}">
                 {% fa5_icon 'edit' %}
             </button>