Unaccented autocomplete in forms for related entities (#1479)

[blms]

In this PR

Per #1479:

• Install the postgresql "unaccent" extension
• Create new autocomplete views with unaccented and case-insensitive queries for Person and Place models
• Use those views in every form where a Person or Place is chosen

[codecov[bot]]

Codecov Report

Merging #1552 (a10bef0) into develop (57ecd6e) will increase coverage by 0.01%. Report is 2 commits behind head on develop. The diff coverage is 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #1552 +/- ## =========================================== + Coverage 98.44% 98.46% +0.01% =========================================== Files 222 225 +3 Lines 12508 12613 +105 =========================================== + Hits 12314 12419 +105 Misses 194 194 ```