* refactor(loginpage): migrate custom button styles to use Button component
* refactor(certificationkey): prefer grafana-ui form elements over html elements and classnames
* refactor(axisselector): prefer grafana-ui Button component over html button element
* refactor(input-datasource): replace use of btn class with grafana-ui components
* chore(grafana-ui): delete deprecated ToggleButtonGroup component
* refactor: replace btn and cta-form__close class usage with IconButton
* chore(closebutton): post master merge use v2 theme
* refactor(permissionlist): remove usage of .btn classname
* Wip
* docs(styling): update styling and theme docs import paths
* refactor(alerting): remote btn classnames from TestRuleResult
* refactor(apikeys): prefer grafana-ui Button components over btn classNames
* refactor(folders): prefer grafana-ui Button components over btn classNames
* refactor(teams): prefer grafana-ui Button components over btn classNames
* refactor(datasources): prefer grafana-ui Button components over btn classNames
* refactor: prefer grafana-ui Button components over btn classNames
* Minor style tweak to service buttons
* test: update snapshots related to button changes
* chore(input-datasource): remove unused import declaration
* refactor(loginservicebuttons): rename theme.palette to theme.colors
Co-authored-by: Torkel Ödegaard <torkel@grafana.com>
