reorder dependencies use, add comments

src/browser/main/tab/page/navigation/mod.rs

@@ -4,27 +4,28 @@ mod history;
 mod reload;
 mod request;
 
-use gtk::prelude::BoxExt;
-use gtk::{Box, Orientation};
-
 use base::Base;
 use bookmark::Bookmark;
 use history::History;
 use reload::Reload;
 use request::Request;
 
+use gtk::{prelude::BoxExt, Box, Orientation};
+
 pub struct Navigation {
     widget: Box,
 }
 
 impl Navigation {
     pub fn new() -> Navigation {
+        // Init components
         let base = Base::new();
         let history = History::new();
         let reload = Reload::new();
         let request = Request::new();
         let bookmark = Bookmark::new();
 
+        // Init widget
         let widget = Box::builder()
             .orientation(Orientation::Horizontal)
             .spacing(8)
@@ -40,6 +41,7 @@ impl Navigation {
         widget.append(request.widget());
         widget.append(bookmark.widget());
 
+        // Result
         Self { widget }
     }