Print view uses the SilverStripe templating to render values which means that
values are safely escaped by default. This can be tested by chaing `$CellString`
to `$CellString.RAW` in the GridField_print.ss template to see this escaping
being disabled.
This pull request removes double escaping of HTML in strings.
Repairing tests and regressions
Consistently use `Security::getCurrentUser()` and `Security::setCurrentUser()`
Fix for the logout handler to properly logout, some minor wording updates
Remove the login hashes for the member when logging out.
BasicAuth to use `HTTPRequest`
Enhancement Tidy up permission icons to new icon library
WIP The modal is a short term workaround until the UI is all react based but we wanted to do some cleanup prior to 4 release
API Remove ssui.button
Enhancement Update buttons to new flat bootstrap style
