* #1627 Replace BCryptService with Maven dependency
- Remove BCryptService in favor of a better BCrypt implementation (Maven dependency)
- Introduce BCryptHasher wrapping the dependency with more suitable methods
- Fix inaccurate details about salt length in docu annotation: for BCrypt it's always 22 chars
- Change phpBB hash to produce 2y hashes instead of 2a
* #1627 Use UTF-8 encoding when (dis)assembling Strings
* #1627 Small test additions
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