ui: Fixed layout of QtBookmarkCreator

* fixed window size and resizing
* fixed layout and spacing
* removed focus rects on Mac
* fixed category dropdown style for Mac
* reuse button handling from QtWindow
* updated QtBookmarkBar buttons to new icon creation

bin/app/data/gui/window/window.css

@@ -110,6 +110,19 @@ QLabel, QCheckBox {
 	min-width: 5em;
 }
 
+#windowButton:hover {
+	color: white;
+	background: #2D3C86;
+}
+
+#windowButton:default {
+	border: 2px solid lightgray;
+}
+
+#windowButton:disabled {
+	color: lightgray;
+}
+
 #menuButton {
 	background: white;
 	border: none;
@@ -123,23 +136,10 @@ QLabel, QCheckBox {
 	width: 90px;
 }
 
-#windowButton:hover {
-	color: white;
-	background: #2D3C86;
-}
-
-#windowButton:default {
-	border: 2px solid lightgray;
-}
-
 #menuButton:hover, #menuButton:checked {
 	background: #CFD2E0;
 }
 
-#windowButton:disabled {
-	color: lightgray;
-}
-
 #projectContainer {
 	background: white;
 	border: 1px solid lightgray;