Codex search treats Swedish diacritics as ascii equivalents

Overview: When conducting title level searches in Codex for titles containing Swedish diacritics (å,ä,ö) the search behaves as if those characters are reduced to their ASCII equivalents (a,o).

Steps to Reproduce:

• Create a couple of records in Inventory with titles starting on a, å, ä or similar
  For example:
  "Den aktansvärda"
  "Den äkta varan"
  "Den åländska skärgården"
  "The Åland archipelago"
  "Ålöndska skärgården"
  "The Aland archipelago"

• Go to Codex and conduct a title search for åland

Expected Results:
The title "The Åland archipelago" is showing.

(Another form of expected result is that also "Den åländska skärgården" is showing since "åländska" is a form of "åland" that Swedish stemming algorithms might be able to catch.)

Actual Results:
"The Aland archipelago" is returned together with the above and a few other items containing the string "aland". Se attached image.

Additional Information: Will add these in separate issues.

This particular issue might get solved by changing Collation on relevant tables in Postgres to Swedish (see https://www.postgresql.org/docs/9.1/static/collation.html), but I believe that this issue is related to a bigger discussions on search technology