Continued:

Continued:
- "externalized" hard-wired hash function name "sha256" to configuration key
  "crypto_hash_function_name", maybe others will follow?
- renamed $config array to $configData in FrameworkConfiguration class
- since PHP doesn't support static initializer, e.g. like Java does, added
  private, static method staticInitializer() which is (in Java) executed only
  once when the class file has been loaded

Signed-off-by: Roland Häder <roland@mxchange.org>