Compensation detail view

* adds compensation detail view (WIP)
* adds includes dir for related objects, similar to interventions
* adds functionality for
   * adding/removing before_states
   * adding/removing after_states
   * adding/removing deadlines
   * adding/removing documents
* refactors usage of BaseModalForm
   * holds now process_request() in base class for generic usage anywhere
* adds __str__() method for some models
* compensation__action is blank=True now
* renamed tooltips
* adds new routes for state/deadline/document handling inside of compensation/urls.py
* adds precalculation of before/after_states for detail view, so users will see directly if there are missing states
* removes unnecessary link for intervention detail payment
* adds missing tooltips for check and record icon on detail views
* refactors DeadlineTypeEnum into DeadlineType in konova/models.py, just as the django 3.x documentation suggests for model enumerations
* UuidModel id field is not editable anymore in the admin interface
* adds/updates translations

compensation/templates/compensation/detail/includes/states-after.html

@@ -0,0 +1,62 @@
+{% load i18n l10n fontawesome_5 %}
+<div id="related-documents" class="card">
+    <div class="card-header rlp-r">
+        <div class="row">
+            <div class="col-sm-6">
+                <h5>
+                    <span class="badge badge-light">{{comp.after_states.count}}</span>
+                    {% trans 'States after' %}
+                </h5>
+            </div>
+            <div class="col-sm-6">
+                <div class="d-flex justify-content-end">
+                    {% if is_default_member and has_access  %}
+                    <button class="btn btn-outline-default btn-modal" data-form-url="{% url 'compensation:new-state' comp.id %}" title="{% trans 'Add new state after' %}">
+                        {% fa5_icon 'plus' %}
+                        {% fa5_icon 'layer-group' %}
+                    </button>
+                    {% endif %}
+                </div>
+            </div>
+        </div>
+    </div>
+    <div class="card-body scroll-300">
+        <table class="table table-hover">
+            <thead>
+            <tr>
+                <th scope="col">
+                    {% trans 'Biotope type' %}
+                </th>
+                <th scope="col">
+                    {% trans 'Surface' %}
+                </th>
+                <th scope="col">
+                    {% trans 'Action' %}
+                </th>
+            </tr>
+            </thead>
+            <tbody>
+            {% for state in comp.after_states.all %}
+            <tr>
+                <td class="align-middle">
+                    {{ state.biotope_type }}
+                </td>
+                <td class="align-middle">{{ state.surface|floatformat:2 }} m²</td>
+                <td>
+                    {% if is_default_member and has_access  %}
+                    <button data-form-url="{% url 'compensation:state-remove' state.id %}" class="btn btn-default btn-modal" title="{% trans 'Remove state' %}">
+                        {% fa5_icon 'trash' %}
+                    </button>
+                    {% endif %}
+                </td>
+            </tr>
+            {% endfor %}
+            </tbody>
+        </table>
+        {% if sum_before_states > sum_after_states %}
+            <div class="row alert alert-danger">
+                {% trans 'Missing surfaces: ' %}{{ diff_states|floatformat:2 }} m²
+            </div>
+        {% endif %}
+    </div>
+</div>