Add license to policy-engine files

Added license to various files.
Updated XACMLPolicyScanner to work even when license comment
is added to the Policy.xml file.
Moved DOCTYPE before license in html files.
Removed license from css files, as many are generated or
come from third-party software.
Removed license from other generated files.

Change-Id: I9d98ca9f552a6eae17e80ef27fc7045cc4f27b8e
Issue-ID: POLICY-741
Signed-off-by: Jim Hahn <jrh3@att.com>
diff --git a/packages/install/src/files/paplp.conf b/packages/install/src/files/paplp.conf
index e4fc837..13e3218 100755
--- a/packages/install/src/files/paplp.conf
+++ b/packages/install/src/files/paplp.conf
@@ -1,3 +1,23 @@
+#
+#============LICENSE_START==================================================
+#  ONAP Policy Engine
+#===========================================================================
+#  Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+#===========================================================================
+# 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.
+#============LICENSE_END==================================================
+#
+
 # JVM specific parameters
 LOGPARSER_JMX_PORT=9996
 LOGPARSER_X_MS_MB=1024