* Performance: Standardize lodash imports to use destructured members
Changes lodash imports of the form `import x from 'lodash/x'` to
`import { x } from 'lodash'` to reduce bundle size.
* Remove unnecessary _ import from Graph component
* Enforce lodash import style
* Fix remaining lodash imports
* Theming: Updates to select styles and theme model progress
* Progress
* Update menu
* Updated menu group
* Improving button styles
* Added transitions to theme
* solving the hover & selected, focus issues
* Updated snapshot
* adding some colors from figma, but waiting to use them as not enough components use new layer colors
* Updates
* Updates
* Progress
* Renames
* Improvements to theme overview
* updated test
* demo update
* More new theme colors
* Wip new card styles
* Card tweaks hover is not working
* Updates more colors from figma
* Progress
* Progress
* Updated radio button styles
* Progress on new colors
* Progress
* New page toolbar and toolbar button design
* New toolbar button design
* Reverted to older toolbar and button look
* Updated snapshot
* Updated generated files
* Updated design
* Updates
* Added card hover
* Fixed button group
* Updates
* chore(dashboardsettings): introduce deep-diff for diffing dashboard models
* feat(dashboardsettings): initial commit of diff comparision react migration
* feat(dashboardsettings): wip - use json-source-map and monaco editor
* chore(deps): add react-diff-viewer to package.json
* feat(dashboardsettings): take the simplistic road for diff view
* refactor(dashboardsettings): clean up Version Settings components
* chore: delete angular historyListCtrl code
* refactor(dashboardsettings): styling fixes
* Small color tweaks
* refactor(versionhistory): fix issues around summary text. write tests
* test(versionhistory): add test for jsonDiff
* refactor(versionhistory): cleanup utils and reduce dom elements
* test(versionsettings): add tests for comparision view
* test(versionsettings): finialise tests for version history comparison view
* test(versionsettings): remove debug
Co-authored-by: Torkel Ödegaard <torkel@grafana.com>
