Restructure our python module. A lot.

src/pretix/presale/static/pretixpresale/less/event.less

@@ -0,0 +1,49 @@
+.product-row {
+    border-top: 1px solid @table-border-color;
+
+    &.headline, &.simple {
+        border-top: 2px solid @table-border-color;
+    }
+    &:last-child {
+        border-bottom: 2px solid @table-border-color;
+    }
+    p:last-child {
+        margin-bottom: 0;
+    }
+
+    .input-item-count {
+        text-align: center;
+    }
+    .availability-box {
+        text-align: center;
+
+        &.gone {
+            color: @alert-danger-text;
+        }
+        &.unavailable {
+            color: @alert-warning-text;
+        }
+    }
+}
+.cart-row, .product-row {
+    padding: 10px 0;
+
+    .count form {
+        display: inline;
+    }
+    .price, .count {
+        text-align: right;
+    }
+    .price small,
+    .availability-box small {
+        display: block;
+        line-height: 1;
+    }
+
+    &.total {
+        border-top: 1px solid @table-border-color;
+    }
+}
+.checkout-button-row {
+    padding: 15px 0;
+}