* 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
* Datasource/CloudWatch: More robust handling of different query modes
A small refactor which changes how the CloudWatch datasource handles
multiple queries with different query modes. Groundwork for future
Logs/Metrics unification work.
* Datasource/Cloudwatch: Adds support for Cloudwatch Logs
* Fix rebase leftover
* Use jsurl for AWS url serialization
* WIP: Temporary workaround for CLIQ metrics
* Only allow up to 20 log groups to be selected
* WIP additional changes
* More changes based on feedback
* More changes based on PR feedback
* Fix strict null errors