Add license headers

git-svn-id: https://svn.apache.org/repos/asf/forrest/trunk@1824216 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/main/webapp/skins/fleece-dev/css/basic.css b/main/webapp/skins/fleece-dev/css/basic.css
index d5a5e1f..95ce561 100644
--- a/main/webapp/skins/fleece-dev/css/basic.css
+++ b/main/webapp/skins/fleece-dev/css/basic.css
@@ -1,3 +1,20 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one or more
+* contributor license agreements.  See the NOTICE file distributed with
+* this work for additional information regarding copyright ownership.
+* The ASF licenses this file to You 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.
+*/
+
 /**
  * General
  */
diff --git a/main/webapp/skins/fleece-dev/css/screen.css b/main/webapp/skins/fleece-dev/css/screen.css
index d8821db..d135f9e 100644
--- a/main/webapp/skins/fleece-dev/css/screen.css
+++ b/main/webapp/skins/fleece-dev/css/screen.css
@@ -1,3 +1,20 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one or more
+* contributor license agreements.  See the NOTICE file distributed with
+* this work for additional information regarding copyright ownership.
+* The ASF licenses this file to You 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.
+*/
+
 /* override bootstrap: */
 #topmenu {
     margin: 0;
diff --git a/main/webapp/skins/fleece-dev/xslt/html/book-to-menu.xsl b/main/webapp/skins/fleece-dev/xslt/html/book-to-menu.xsl
index 4f00bf3..a5c5b21 100644
--- a/main/webapp/skins/fleece-dev/xslt/html/book-to-menu.xsl
+++ b/main/webapp/skins/fleece-dev/xslt/html/book-to-menu.xsl
@@ -1,5 +1,21 @@
 <?xml version="1.0"?>
 <!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You 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.
+-->
+<!--
 book-to-menu.xsl generates the HTML menu.    See the imported book-to-menu.xsl for
 details.
 -->
diff --git a/main/webapp/skins/fleece-dev/xslt/html/site-to-xhtml.xsl b/main/webapp/skins/fleece-dev/xslt/html/site-to-xhtml.xsl
index 12562fe..caa8245 100644
--- a/main/webapp/skins/fleece-dev/xslt/html/site-to-xhtml.xsl
+++ b/main/webapp/skins/fleece-dev/xslt/html/site-to-xhtml.xsl
@@ -1,5 +1,21 @@
 <?xml version="1.0"?>
 <!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You 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.
+-->
+<!--
 site-to-xhtml.xsl is the final stage in HTML page production.  It merges HTML from
 document-to-html.xsl, tab-to-menu.xsl and book-to-menu.xsl, and adds the site header,
 footer, searchbar, css etc.  As input, it takes XML of the form: