Content Usage Metrics Dashboard (#79)

* no conditional sidebar behavior

* Use conditional UI for mutable controls

* harmonize the inner and outer dashboard a bunch

* renv snapshot

* remove reactlog from app

* remove unnecessary tag

* many improvements

- bookmarking
- state preservation of conditional controls
- better first run (no integration) experience

* More quality of life & clarity updates

* small language change

* download button style tweaks

* clean up imports

* fix tidyr call, move full_url to function

* re-organize, clarify, remove redundancy

* trailing newline

* respond to feedback

* Update CSS for search bar

* remove unnecessary css

* allow dashboard url superstrings to match

Author: toph-allen