Disable window dragging inside toolbar controls

And enable in the context pane toolbar extension.

chrome/skin/default/zotero/contextPane.css

@@ -51,6 +51,10 @@
     background: linear-gradient(to top, #a9a9a9 0, #a9a9a9 1px, #f6f6f6 1px, #f6f6f6 100%);
 }
 
+#zotero-tab-toolbar .toolbarButton {
+    -moz-window-dragging: no-drag;
+}
+
 #zotero-item-toolbar {
     height: 32px;
 }
@@ -62,6 +66,7 @@
     width: 100%;
     margin-inline-start: -5px;
     background: linear-gradient(to top, #a9a9a9 0, #a9a9a9 1px, #f6f6f6 1px, #f6f6f6 100%);
+    -moz-window-dragging: drag;
 }
 
 .zotero-context-notes-list {

pdf-reader

@@ -1 +1 @@
-Subproject commit 3540d9184ea9e0a37be92e9757c216987482d8bf
+Subproject commit 1bf671a4b645754b21e6c1868dd6fb5b2f225554