Much more checkstyle cleanup. Added interface for requests needing an
api key.
Merge branch 'bmhm/sendanswer' into next
Merge branch 'next'
Javadoc cleanup
More javadoc updates.
Merge branch 'master' into next
More Javadoc, cleanup and package-info.java-files.
Merge branch 'bmhm/cleanup-v0.1' into next
Javadoc cleanup
More javadoc updates.
More Javadoc, cleanup and package-info.java-files.
Merge branch 'bmhm/sendanswer' of github.com:bmhm/j9kwsolver into bmhm/sendanswer

Conflicts:
	src/de/bmarwell/j9kwsolver/request/CaptchaReturnExtended.java