Documents: fix page breaking issues

Elwig/Documents/style-businessdocument.css

@@ -120,6 +120,10 @@ main > *:first-child {
     font-size: 10pt;
 }
 
+.main-wrapper .hidden {
+    break-before: avoid;
+}
+
 .main-wrapper .bottom {
     bottom: 0;
     position: absolute;

Elwig/Documents/style-deliverynote.css

@@ -52,6 +52,8 @@ table.delivery tr.sum td {
 
 table.delivery-stats {
     font-size: 8pt;
+    break-inside: avoid;
+    break-after: avoid;
 }
 
 table.delivery-stats.expanded th,

Elwig/Documents/style-page.css

@@ -66,6 +66,6 @@ hr.page-break {
 
 @media print {
     .page::after {
-        content: "Seite " counter(page) " von " counter(pages);
+        content: "Seite " counter(page) " von " counter(pages) !important;
     }
 }