Investigate improvements to fuzzy/precise Numbers field filtering and auto-selection #47

There are still some cases where the wanted registration's number was typed into the Numbers field, and yet either none or a wrong pre-selection is made.

Several ideas have occurred to me, and they are not mutually inclusive/exclusive. Investigate.

• UI toggle switch for Auto/Fuzzy/Precise Numbers field lookup. Worker can express their preference.
  • Auto might first execute a precise lookup, and if no matches, fall back to a fuzzy lookup
  • Fuzzy would force a fuzzy lookup
  • Precise would force a precise lookup

Idea for pre-selection:

1. Choose the only result of a precise lookup if only one; else
2. Use existing edit distance comparison (choose the registration whose numbers field have the lowest edit distance)