* Fix#3910 - Require OTP authentication to disable 2FA. Also, remove ability
to generate new OTP backup codes *after* initial backup codes were handed
out during activation
* Restore recovery code re-generation
* Improve display of some 2FA elements
* Add overview of active sessions
* Better display of browser/platform name
* Improve how browser information is stored and displayed for sessions overview
* Fix test
* Add form for account deletion
* If avatar or header are gone from source, remove them
* Add option to have SuspendAccountService remove user record, add tests
* Exclude suspended accounts from search
* Add regex filter on the community timeline and the public timeline
* correcting
* Adjust the height of header buttons
* Remove trailing spaces
* Remove trailing spaces
* Solve some code duplication
* reset the state of the locale files in app/javascript/mastodon/locales
* adjust to upstream
* adjust to upstream
* change keys of locale settings
* Allow mounting arbitrary columns
* Refactor column headers, allow pinning/unpinning and moving columns around
* Collapse animation
* Re-introduce scroll to top
* Save column settings properly, do not display pin options in
single-column view, do not display collapse icon if there is
nothing to collapse
* Fix one instance of public timeline being closed closing the stream
Fix back buttons inconsistently sending you back to / even if history exists
* Getting started displays links to columns that are not mounted
The combination of object-fit, relative position 50% from top and translating it
back upwards 50% is what allows us to crop the video properly, so it needs to
be +50%-50%
* Add load more button for large screens
* Fix `next` state value on the first loading
* Don't load if `isLoading || !hasMore`
* Start load on near the bottom
* Always set `overflow: auto` to allow scroll just after opening
* Remove bounce animation which may cause unintended behavior due to max-height
* Use CSS transition instead of react-motion
* Some CSS refactoring including className changing
From #2327 - Elephant friend was overlapping with text, oversized in
single column layout
From #2021 - Centered layout goes against design principles, changes
UX for everybody who's already used to the current one
From #2271 - CPU/RAM overusage from keeping columns in DOM (fix#2648,
possibly also #2101)