Consistency between Wikitext & Visual Editor

Concept
Create a more seamless transition between wikitext and visual editing modes. A user has to make an upfront decision about which mode to edit in. Also, the two modes behave very differently with controls in many different places which can be confusing to new users.

Core Design Principles

 * One edit action - No upfront decision making between two edit actions
 * Point new users to visual editing but allow quick switching
 * No extra steps for key actions
 * Help orient me, don’t shuffle things
 * Frequent and Important actions will be easy to find
 * Show controls that listen to my actions
 * Support Users who work with very specific subject matter
 * Be aware of a users editing stage
 * Create spaces for the growth team to tie in their experiments

Some of the key areas covered in the spec

 * Positioning the switch state in the bar
 * First time UX
 * Rules for defaults and remembering modes
 * Detail the audit for any nested actions
 * Article Issues UX and legal concerns
 * Title positioning
 * Actions grouping for Wikitext Editor V1
 * Actions grouping for Visual Editor V1
 * First time Next and Save UX
 * Cancel and Preview positioning
 * Help
 * Edit Summary Details