GUACAMOLE-1298: Trim down NOTICE files to only those attribution notices that are required.

From https://infra.apache.org/licensing-howto.html#bundle-asf-product:

>
> Modifications to NOTICE
> -----------------------
>
> The NOTICE file is reserved for a certain subset of legally required
> notifications which are not satisfied by either the text of LICENSE or
> the presence of licensing information embedded within the bundled
> dependency. Aside from Apache-licensed dependencies which supply NOTICE
> files of their own, it is uncommon for a dependency to require additions
> to NOTICE.
>
> Copyright notifications which have been relocated, rather than
> removed, from source files must be preserved in NOTICE. However,
> elements such as the copyright notifications embedded within BSD and MIT
> licenses do not need to be duplicated in NOTICE. You can leave those
> notices in their original locations.
>
> It is important to keep NOTICE as brief and simple as possible, as each
> addition places a burden on downstream consumers.
>
> *Do not* add anything to NOTICE which is not legally required.
>

doc/licenses/jose4j-0.5.5/NOTICE

@@ -0,0 +1,14 @@
+jose4j
+Copyright 2012-2015 Brian Campbell
+
+EcdsaUsingShaAlgorithm contains code for converting the concatenated
+R & S values of the signature to and from DER, which was originally
+derived from the Apache Santuario XML Security library's SignatureECDSA
+implementation. http://santuario.apache.org/
+
+The Base64 implementation in this software was derived from the
+Apache Commons Codec project. http://commons.apache.org/proper/commons-codec/
+
+JSON processing in this software was derived from the JSON.simple toolkit.
+https://code.google.com/p/json-simple/
+