Transactions/protolog selecting entries.

Remove ability to "deselect" transactions entry, so properties tree does not change to current timestamp.
Add ability to select protolog entries, changing the background color, for better navigation (no other functionality).

Screencast of protolog selection + scroll behaviour: https://screencast.googleplex.com/cast/NTI2MjIxMjYwNzI0NjMzNnw1YTNhZTc5NS02YQ

Fixes: 326197320
Test: npm run test:unit:ci
Change-Id: I30e9b5bc91015e4e71d9bbdee2794eac2e12b6df
9 files changed