* Improvements to the single column layout

- Add follows and followers link to the right panel
- Increase margins around separators in right panel
- Add follow requests link with counter when account is locked to right panel

* Redirect from getting started to home when navigation panel is visible

* Add responsive panels to the single-column layout

* Fixes

* Fix not being able to save the preference

* Fix code style issues

* Set max-height on the compose textarea and add a link to relationship manager

* Move TabsBar rendering logic from CSS to the ColumnsArea component

* Add forceSingleColumn mode

* Add unread notifications counter to tabs bar

* Add toggle to control `forceSingleColumn`

* Increase paddings in mobile layout responsively at large sizes