Add sub-events and relative date settings (#503)

* Data model

* little crud

* SubEventItemForm etc

* Drop SubEventItem.active, quota editor

* Fix failing tests

* First frontend stuff

* Addons form stuff

* Quota calculation

* net price display on EventIndex

* Add tests, solve some bugs

* Correct quota selection in more places, consolidate pricing logic

* Fix failing quota tests

* Fix TypeError

* Add tests for checkout

* Fixed a bug in QuotaForm

* Prevent immutable cart if a quota was removed from an item

* Add tests for pricing

* Handle waiting list

* Filter in check-in list

* Fixed import lost in rebase

* Fix waiting list widget

* Voucher management

* Voucher redemption

* Fix broken tests

* Add subevents to OrderChangeManager

* Create a subevent during event creation

* Fix bulk voucher creation

* Introduce subevent.active

* Copy from for subevents

* Show active in list

* ICal download for subevents

* Check start and end of presale

* Failing tests / show cart logic

* Test

* Rebase migrations

* REST API integration of sub-events

* Integrate quota calculation into the traditional quota form

* Make subevent argument to add_position optional

* Log-display foo

* pretixdroid and subevents

* Filter by subevent

* Add more tests

* Some mor tests

* Rebase fixes

* More tests

* Relative dates

* Restrict selection in relative datetime widgets

* Filter subevent list

* Re-label has_subevents

* Rebase fixes, subevents in calendar view

* Performance and caching issues

* Refactor calendar templates

* Permission tests

* Calendar fixes and month selection

* subevent selection

* Rename subevents to dates

* Add tests for calendar views

src/pretix/control/templates/pretixcontrol/orders/index.html

@@ -32,17 +32,26 @@
                 <div class="input-group">
                     <input type="text" name="code" class="form-control" placeholder="{% trans "Order code" %}" autofocus>
                     <span class="input-group-btn">
-                    <button class="btn btn-primary" type="submit">{% trans "Go!" %}</button>
-                </span>
+                        <button class="btn btn-primary" type="submit">{% trans "Go!" %}</button>
+                    </span>
                 </div>
             </form>
             <form class="" action="" method="get">
                 <div class="col-md-2 col-xs-6">
                     {% bootstrap_field filter_form.status layout='inline' %}
                 </div>
-                <div class="col-md-2 col-xs-6">
-                    {% bootstrap_field filter_form.item layout='inline' %}
-                </div>
+                {% if request.event.has_subevents %}
+                    <div class="col-md-1 col-xs-6">
+                        {% bootstrap_field filter_form.item layout='inline' %}
+                    </div>
+                    <div class="col-md-1 col-xs-6">
+                        {% bootstrap_field filter_form.subevent layout='inline' %}
+                    </div>
+                {% else %}
+                    <div class="col-md-2 col-xs-6">
+                        {% bootstrap_field filter_form.item layout='inline' %}
+                    </div>
+                {% endif %}
                 <div class="col-md-2 col-xs-6">
                     {% bootstrap_field filter_form.provider layout='inline' %}
                 </div>

src/pretix/control/templates/pretixcontrol/orders/overview.html

@@ -12,6 +12,32 @@
         </div>
     </div>
 	<h1>{% trans "Order overview" %}</h1>
+    {% if request.event.has_subevents %}
+        <form class="form-inline helper-display-inline" action="" method="get">
+            <p>
+                {% if request.event.has_subevents %}
+                    <select name="subevent" class="form-control">
+                        <option value="">{% trans "All dates" context "subevent" %}</option>
+                        {% for se in request.event.subevents.all %}
+                            <option value="{{ se.id }}"
+                                    {% if request.GET.subevent|add:0 == se.id %}selected="selected"{% endif %}>
+                                {{ se.name }} – {{ se.get_date_range_display }}
+                            </option>
+                        {% endfor %}
+                    </select>
+                {% endif %}
+                <button class="btn btn-primary" type="submit">{% trans "Filter" %}</button>
+            </p>
+        </form>
+    {% endif %}
+    {% if subevent_warning %}
+        <div class="alert alert-info">
+            {% blocktrans trimmed context "subevent" %}
+                If you select a sub-event, payment method fees will not be listed here as it might not be clear which
+                sub-event they belong to.
+            {% endblocktrans %}
+        </div>
+    {% endif %}
     <div class="table-responsive">
         <table class="table table-condensed table-hover table-product-overview">
             <thead>