* Implemented a basic jump bar for the library view. This currently just interacts with existing pagination controls and is not inlined with infinite scroll yet. This is a first pass implementation.
* Refactored time estimates into the reading service.
* Cleaned up when the jump bar is shown to mimic pagination controls
* Cleanup up code in reader service.
* Scroll to card when selecting a jump key that is shown on the current page.
* Ensure estimated times always has the smaller number on left hand side.
* Fixed a bug with a missing vertical rule
* Fixed an off by 1 pixel for search overlay
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