Move Settings tab navigation to the main sidebar menu

Closes #155 (closed) and #154 (closed)

This MR mocks the list of tabs used to render menu in the Settings section. !202 should be merged when the required backend changes are made (pleroma!3348 (closed))

CHANGELOG.md

@@ -22,6 +22,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Replace regular inputs with textareas for setting welcome messages in the Settings section
 - Update rendering Moderation Log Messages so that all usernames are links to the pages of the corresponding users in Admin-FE
 - Remove Websocket based federation settings
+- Move Settings tab navigation from the tabbed menu to the main sidebar menu. A separate route is created for each tab.
+- Move Emoji packs configuration to the Emoji tab in the Settings section
 
 ### Fixed