* TimeRangePicker: allow to customize quick ranges per dashboard
* TimeRangePicker: show selected custom time range using its name
* rangeutil: add tests for describeTextRange + quickRanges
* Fix up tests, and add an extra case for hidden time ranges
* Don't construct an object to find options, add findRangeInOptions util
* fix type errors detected by TypeScript
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Co-authored-by: joshhunt <josh@trtr.co>