* Initial Boards+Channels implementation
* Adding draft code to list the boards in a channel
* Adding the hability to link/unlink channels (fake channel for now)
* Simplify slight the migrations
* WIP
* More changes to improve the implementation
* Adding partial implementation of linking channel from board
* Allow linking in both directions
* Removing unused file
* More work on channel binding
* some refactoring
* Improving code quality and interface
* More improvements
* Changing the API to search channels
* Adding a limit of 10 channels in search
* Add confirmation on linking public channels
* Improve a bit the styling of the confirmation modal
* Showing the current linked channel
* Adding link board confirmation to channel interface
* Fixing tests and linter errors
* Fixing backend tests
* Adding permissions tests
* Fixing linter errors
* Fixing small things
* Fixing some typescript errors
* Adding new boardSelectorItem tests
* Improving a bit tests
* Adding jest unit tests
* Remove duplicated implementation (from merge, I guess)
* Adding missed files
* Addressing some of the PR review comments
* Removing unneeded new wrapIntl implementation
* Moving NotSupportedError to the store package to be share between all the store implementations or layers
* Fixing one of the pendings ToDo
* Creating a constructor for the NotSupportedError
* Fixing linter error
* Making theming compatible with mattermost on plugin mode
* Fixing some variables
* Adding isFocalboardPlugin function
* Fixing some styles
* Improving styles for boards icon in the global switcher
* Adding global header support.
* Set the landing URL for the global header to /dashboard
* Redirecting directly to the current channel on open Boards
* Some improvements on global header
* Adding missed file
* Removing theme selector from the global header and fixing a style bug on the channel header icon
* Adding global header tests
* Adding missed file
* Fix global header icon
* Adding isFocalboardPlugin function
* Fixing unit tests
* Fixing problem with header menu styles
Co-authored-by: Jesús Espino <jespinog@gmail.com>