Added a dashboard widget to help starting

src/pretix/control/templates/pretixcontrol/event/dashboard_widget_welcome.html

@@ -0,0 +1,12 @@
+<div class="welcome-wizard">
+    <h3>{{ title }}</h3>
+    {% if subtitle %}
+        <div class="attentionline">{{ subtitle }}</div>
+    {% endif %}
+    {% if text %}
+        <p>{{ text }}</p>
+    {% endif %}
+    {% if button_text %}
+        <p><a href="{{ button_url }}" class="btn btn-default btn-lg">{{ button_text }}</a></p>
+    {% endif %}
+</div>

src/pretix/control/views/dashboards.py

@@ -4,6 +4,7 @@ from django.core.urlresolvers import reverse
 from django.db.models import Sum
 from django.dispatch import receiver
 from django.shortcuts import render
+from django.template.loader import get_template
 from django.utils import formats
 from django.utils.formats import date_format
 from django.utils.translation import ugettext_lazy as _
@@ -110,6 +111,40 @@ def shop_state_widget(sender, **kwargs):
     }]
 
 
+@receiver(signal=event_dashboard_widgets)
+def welcome_wizard_widget(sender, **kwargs):
+    template = get_template('pretixcontrol/event/dashboard_widget_welcome.html')
+    ctx = {
+        'title': _('Welcome to pretix!')
+    }
+    kwargs = {'event': sender.slug, 'organizer': sender.organizer.slug}
+
+    if not sender.items.exists():
+        ctx.update({
+            'subtitle': _('Get started by creating a product'),
+            'text': _('The first thing you need for selling tickets to your conference is one or more "products" your '
+                      'participants can choose from. A product can be a ticket or anything else that you want to sell, '
+                      'e.g. additional merchandise in form of t-shirts.'),
+            'button_text': _('Create a first product'),
+            'button_url': reverse('control:event.items.add', kwargs=kwargs)
+        })
+    elif not sender.quotas.exists():
+        ctx.update({
+            'subtitle': _('Create quotas that apply to your products'),
+            'text': _('Your tickets will only be available for sale if you create a matching quota, i.e. if you tell '
+                      'pretix how many tickets it should sell for your event.'),
+            'button_text': _('Create a first quota'),
+            'button_url': reverse('control:event.items.quotas.add', kwargs=kwargs)
+        })
+    else:
+        return []
+    return [{
+        'width': 12,
+        'priority': 2000,
+        'content': template.render(ctx)
+    }]
+
+
 def event_index(request, organizer, event):
     widgets = []
     for r, result in event_dashboard_widgets.send(sender=request.event):

src/static/pretixcontrol/scss/_dashboard.scss

@@ -0,0 +1,79 @@
+.dashboard-panels .panel-heading .fa {
+  opacity: 0.5;
+}
+.dashboard > div {
+  padding: 5px;
+}
+.dashboard .widget {
+  min-height: 160px;
+  background: #F8F8F8;
+  display: block;
+  position: relative;
+}
+.dashboard .widget:hover,.dashboard .widget:focus {
+  background: #EEEEEE;
+  text-decoration: none;
+}
+.dashboard .numwidget {
+  .num {
+    display: block;
+    padding: 28px 0 10px;
+    text-align: center;
+    font-size: 40px;
+  }
+  .text {
+    display: block;
+    text-align: center;
+    font-size: 20px;
+  }
+}
+.dashboard .shopstate {
+  text-align: center;
+  padding: 36px 0;
+
+  span.live, span.off {
+    display: block;
+    font-size: 20px;
+    padding: 10px 0;
+  }
+  span.live {
+    color: $brand-success;
+  }
+  span.off {
+    color: $brand-danger;
+  }
+}
+.dashboard .event {
+  text-align: center;
+  padding: 30px;
+  font-size: 20px;
+
+  span.from, span.to {
+    display: block;
+    font-size: 25px;
+  }
+}
+.dashboard .newevent {
+  text-align: center;
+  padding: 30px;
+  font-size: 20px;
+
+  span.fa {
+    display: block;
+    font-size: 60px;
+    padding-bottom: 15px;
+  }
+}
+.dashboard .welcome-wizard {
+  padding: 30px;
+  h3 {
+    margin: 0 0 10px 0;
+  }
+  .attentionline {
+    font-size: 18px;
+    margin: 0 0 10px 0;
+  }
+  p:last-child {
+    margin-bottom: 0;
+  }
+}

src/static/pretixcontrol/scss/main.scss

@@ -7,6 +7,7 @@ $fa-font-path: static("fontawesome/fonts");
 @import "_forms.scss";
 @import "_flags.scss";
 @import "_orders.scss";
+@import "_dashboard.scss";
 
 footer {
     text-align: center;
@@ -81,79 +82,12 @@ h1 .btn-sm {
     -ms-transform: rotateX(180deg); /* IE 9 */
     -webkit-transform: rotateX(180deg); /* Safari and Chrome */
 }
-.dashboard-panels .panel-heading .fa {
-    opacity: 0.5;
-}
 @media (max-width: $screen-sm-max) {
     .navbar-nav {
         margin-left: 0;
     }
 }
 
-.dashboard > div {
-    padding: 5px;
-}
-.dashboard .widget {
-    min-height: 160px;
-    background: #F8F8F8;
-    display: block;
-    position: relative;
-}
-.dashboard .widget:hover,.dashboard .widget:focus {
-    background: #EEEEEE;
-    text-decoration: none;
-}
-.dashboard .numwidget {
-    .num {
-        display: block;
-        padding: 28px 0 10px;
-        text-align: center;
-        font-size: 40px;
-    }
-    .text {
-        display: block;
-        text-align: center;
-        font-size: 20px;
-    }
-}
-.dashboard .shopstate {
-    text-align: center;
-    padding: 36px 0;
-
-    span.live, span.off {
-        display: block;
-        font-size: 20px;
-        padding: 10px 0;
-    }
-    span.live {
-        color: $brand-success;
-    }
-    span.off {
-        color: $brand-danger;
-    }
-}
-.dashboard .event {
-    text-align: center;
-    padding: 30px;
-    font-size: 20px;
-
-    span.from, span.to {
-        display: block;
-        font-size: 25px;
-    }
-}
-.dashboard .newevent {
-    text-align: center;
-    padding: 30px;
-    font-size: 20px;
-
-    span.fa {
-        display: block;
-        font-size: 60px;
-        padding-bottom: 15px;
-    }
-
-}
 
 .helper-display-inline {
     display: inline !important;