ECFLOW-1776: added more license notes for code used in REST API

NOTICE

@@ -1,5 +1,5 @@
 Apache [ecflow]
-      Copyright [2009-2019] The Apache Software Foundation
+      Copyright [2009-2022] The Apache Software Foundation
 
       This product includes software developed at
       The Apache Software Foundation (http://www.apache.org/).
@@ -56,6 +56,54 @@ TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
 OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
+Certificate.hpp
+===============
+
+Much of the code there is taken from https://gist.github.com/nathan-osman/5041136,
+provided with the MIT License:
+
+The MIT License (MIT)
+
+Copyright (c) 2022 Nathan Osman
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this
+software and associated documentation files (the "Software"), to deal in the Software
+without restriction, including without limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of the Software, and to permit
+persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or
+substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+
+
+Base64.hpp
+==========
+
+Distributed under the BSD License - see the source file for the full text.
+
+
+
+cpp-httplib
+===========
+
+Distributed under the MIT License see the source directory for the full text.
+
+
+json
+====
+
+Distributed under the MIT License see the source directory for the full text.
+
+
+
 LazyTextEdit 
 ================================================
 LazyTextEdit is a Qt based text editor that lazily loads data from disk when