* [Docs] Update and improve docs for Visualize and Discover
* Create a new section for default editor docs
* Fix significant terms link
* Writer changes
* Remove pages that aren't helpful to users
* More writer changes
* Adds saved query docs to search section
* Adds Saved Queries docs to Discover search
* Makes changes requested by PR review
* Changes 'visualizations and dashboards' to 'Visualize and Dashboard', adds x-pack label back to Read only access section
* Changes some text
* Changes Saving searches section
* Rewords saved queries section
* Changes 'Saved search' to 'saved search', tweeks a few words
* Removes second sentence from intro to saved queries
* Changes save button text reference
* Updates screen shots
* Moves images around, adds a hover instruction to delete a query and adds a screen shot of the delete button
* Makes changes as requested
* Adding read-only mode section to Discover
* No more "mode" or "badge" terminology
* Putting newline back
* Adding "Saving" section for visualize
* Adding dashboard read only access section
* Timelion gets read-only documentation
* Adding read only access section to index patterns and advanced settings
* Adding graph read only access section
Makes our language updates more visible to users and removes mentions of Kuery as a separate language. Users still get the old lucene experience by default, but have the option to opt-in to "experimental query features" directly in the query bar. Goal is to get more feedback by making these new features more prominent and less of a jump from lucene.
This overhaul of the docs structure puts Kibana's documentation more
inline with the structure that is used in Elasticsearch. This will help
us better organize the docs going forward as more docs are added.
This also includes a few necessary content changes for 5.0.
