Updated according to latest protobuf changes.

See issue CERT-Polska/hsn2-commons-java#10
Merge pull request #18 from CERT-Polska/protobuf-update

Updated according to latest protobuf changes.
some changes for testing
Merge branch 'develop' into htmlunit-2.12
change recursion counting in ScriptInterceptor
check recursion depth in scripts
Merge branch 'htmlunit-2.12' of
https://github.com/CERT-Polska/hsn2-webclient into htmlunit-2.12

Conflicts:
	src/main/java/pl/nask/hsn2/service/urlfollower/JsScriptErrorListener.java