Styles: Aligned empty state alignment & consistency

- Fixed inital empty state margins/paddings to be aligned and not differ
when lists are empty.
- Aligned button/action display when viewing empty entities.
- Fixed use of non-existing permission in books for book empty state
  button.

Fixes #4563

resources/sass/_blocks.scss

@@ -8,7 +8,7 @@
   border-radius: 3px;
   break-inside: avoid;
   .body, p.empty-text {
-    padding: $-m;
+    padding-block: $-m;
   }
   a, p {
     word-wrap: break-word;

resources/sass/_lists.scss

@@ -342,7 +342,7 @@ details.sort-box[open] summary .caret-container svg {
   font-size: 0.9em;
 }
 .card .activity-list-item {
-  padding: $-s $-m;
+  padding-block: $-s;
 }
 
 .user-list-item {