* New feature: shareable user query
Share the output of a user query by RSS / HTML / OPML with other people through unique URLs.
Replaces the global admin token, which was the only option (but unsafe) to share RSS outputs with other people.
Also add a new HTML output for people without an RSS reader.
fix https://github.com/FreshRSS/FreshRSS/issues/3066#issuecomment-648977890
fix https://github.com/FreshRSS/FreshRSS/issues/3178#issuecomment-769435504
* Remove unused method
* Fix token saving
* Implement HTML view
* Update i18n for master token
* Revert i18n get_favorite
* Fix missing i18n for user queries from before this PR
* Remove irrelevant tests
* Add link to RSS version
* Fix getGet
* Fix getState
* Fix getSearch
* Alternative getSearch
* Default getOrder
* Explicit default state
* Fix test
* Add OPML sharing
* Remove many redundant SQL queries from original implementation of user queries
* Fix article tags
* Use default user settings
* Prepare public search
* Fixes
* Allow user search on article tags
* Implement user search
* Revert filter bug
* Revert wrong SQL left outer join change
* Implement checkboxes
* Safe check of OPML
* Fix label
* Remove RSS button to favour new sharing method
That sharing button was using a global admin token
* First version of HTTP 304
* Disallow some recusrivity
fix https://github.com/FreshRSS/FreshRSS/issues/6086
* Draft of nav
* Minor httpConditional
* Add support for offset for pagination
* Fix offset pagination
* Fix explicit order ASC
* Add documentation
* Help links i18n
* Note about deprecated master token
* Typo
* Doc about format
* docs: language table added
* Update 05_Configuration.md
* Update 05_Configuration.md
* french docs
* Unicode quote and a few fixes
(Same search&replace aslo applied to a few other files)
---------
Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>