Release 3.0.0-beta-9

- Sync with 2.x codebase (Tomas Dvorakm)
- dns resolver configurable from outside via WebserviceConfiguration (#30) (Tomas Dvorak)
- Javadoc doclint disabled only for java >= 1.8 (Tomas Dvorak)
- readme: fixed CA certificate urls (Tomas Dvorak)