use canonical module subfolder tree

src/app/browser/main/tab.rs

@@ -1,29 +0,0 @@
-#[path = "tab/label.rs"]
-mod label;
-#[path = "tab/page.rs"]
-mod page;
-
-use gtk::Notebook;
-
-pub fn new() -> Notebook {
-    let tab = Notebook::builder().scrollable(true).build();
-
-    // Add test tab @TODO restore from session
-    append(&tab, true);
-
-    tab
-}
-
-pub fn append(tab: &Notebook, current: bool) -> u32 {
-    let page = page::new();
-
-    let page_number = tab.append_page(&page, Some(&label::new()));
-
-    tab.set_tab_reorderable(&page, true);
-
-    if current {
-        tab.set_current_page(Some(page_number));
-    }
-
-    page_number
-}