feat(Run Stats): Improvements

[Aaron-Detre]

Changes

• Added access count sums for all listed runs (within timeframe and all-time).
• Sorted runs by descending ID.
• Run ID links to a preview of the unit.
• Removed "Available Actions" column.

Test

• If there are no runs within the selected timeframe, you should not see total access counts.
• Runs by activity should only display all-time total access count.
• Total access counts should be accurate.
• Runs by day/week/month should be sorted by id, but runs by activity should still be sorted by activity.
• Run ID links should work as expected.

Closes #303