UI: #334 add config page language setting (#374)

* UI: #334 add config page language setting

* temporary remove logout button

* Unify fullscreen view class for dialog expanded and settings view

- Replace dialog-expanded and settings-view with single fullscreen-view class
- Update ResponsiveDialog to use fullscreen-view class
- Update CalendarLayout to use fullscreen-view class for settings view
- Consolidate CSS rules in Menubar.styl to use fullscreen-view
- Update test cases to use new class name

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Co-authored-by: Lê Nhân Phụng <lenhanphung@Phung-Mac-M4.local>

src/components/Menubar/Menubar.styl

@@ -92,8 +92,8 @@
   justify-content flex-end
   align-items center
 
-body.dialog-expanded .navigation-controls,
-body.dialog-expanded .current-date-time,
-body.dialog-expanded .refresh-button,
-body.dialog-expanded .select-display
+body.fullscreen-view .navigation-controls,
+body.fullscreen-view .current-date-time,
+body.fullscreen-view .refresh-button,
+body.fullscreen-view .select-display
   display none