removed pdfa3-sample submodule, made mustang main (and only) module, corrected the POM, released 1.4.0 via maven, updated the developer documentation, updated toecount to 0.0.9 to use mustang 1.4.0 via maven repo

NOTICE

@@ -0,0 +1,25 @@
+Mustangproject
+Copyright 2014 Jochen Staerk <jstaerk@usegroup.de>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+
+Based on Apache PDFBox developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+Apache PDFBox was based on source code originally developed in the PDFBox, JempBox and FontBox projects.
+Copyright (c) 2002-2007, www.pdfbox.org
+Copyright (c) 2006-2007, www.jempbox.org
+
+Apache PDFBox was based on source code originally developed in the PaDaF project.
+Copyright (c) 2010 Atos Worldline SAS