Add drag'n'drop to filemanager

src/theme.scss

@@ -1681,6 +1681,27 @@ tag-input {
 }
 
 
+// ----------------------------
+// FileManager
+// ----------------------------
+
+.filemanager {
+
+    // those are for drag'n'drop
+    table {
+        border: 2px solid transparent;
+    }
+
+    .entry-hovered {
+        border: 2px solid $brand-primary;
+    }
+
+    .entry-hovered > td {
+        border: none !important;
+    }
+}
+
+
 // ----------------------------
 // Dark mode overrides
 // ----------------------------