correct DefaultServlet resource pathinContext calculation

exclude servletPath option as resources are always relative to htroot 
or htdocs, the change reflects this.
Theoretically it and the recent adjustments arcording relative urls 
allows to configure the instance to be configurable in a path other as 
root (/)

source/net/yacy/http/servlets/YaCyDefaultServlet.java

@@ -129,8 +129,6 @@ import com.google.common.util.concurrent.UncheckedTimeoutException;
  * 
  *  resourceBase      Set to replace the context resource base
  *
- *  pathInfoOnly      If true, only the path info will be applied to the resourceBase
- *
  * </PRE>
  */
 public class YaCyDefaultServlet extends HttpServlet  {
@@ -139,7 +137,6 @@ public class YaCyDefaultServlet extends HttpServlet  {
     protected ServletContext _servletContext;
     protected boolean _acceptRanges = true;
     protected boolean _dirAllowed = true;
-    protected boolean _pathInfoOnly = false;
     protected Resource _resourceBase;
     protected MimeTypes _mimeTypes;
     protected String[] _welcomes;    
@@ -172,7 +169,6 @@ public class YaCyDefaultServlet extends HttpServlet  {
         }
         _acceptRanges = getInitBoolean("acceptRanges", _acceptRanges);
         _dirAllowed = getInitBoolean("dirAllowed", _dirAllowed);
-        _pathInfoOnly = getInitBoolean("pathInfoOnly", _pathInfoOnly);
 
         Resource.setDefaultUseCaches(false); // caching is handled internally (prevent double caching)
 
@@ -245,19 +241,15 @@ public class YaCyDefaultServlet extends HttpServlet  {
     @Override
     protected void doGet(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
-        String servletPath;
         String pathInfo; 
         Enumeration<String> reqRanges = null;
         boolean included = request.getAttribute(RequestDispatcher.INCLUDE_REQUEST_URI) != null; 
         if (included) {
-            servletPath = (String) request.getAttribute(RequestDispatcher.INCLUDE_SERVLET_PATH);
             pathInfo = (String) request.getAttribute(RequestDispatcher.INCLUDE_PATH_INFO);
-            if (servletPath == null) {
-                servletPath = request.getServletPath();
+            if (pathInfo == null) {
                 pathInfo = request.getPathInfo();
             }
         } else {
-            servletPath = _pathInfoOnly ? "/" : request.getServletPath();
             pathInfo = request.getPathInfo();
 
             // Is this a Range request?
@@ -267,8 +259,8 @@ public class YaCyDefaultServlet extends HttpServlet  {
             }
         }
         
-        String pathInContext = URIUtil.addPaths(servletPath, pathInfo);
-        boolean endsWithSlash = (pathInfo == null ? request.getServletPath() : pathInfo).endsWith(URIUtil.SLASH);
+        String pathInContext =  pathInfo == null ? "/" : pathInfo; // this is the path of the resource in _resourceBase (= path within htroot respective htDocs)
+        boolean endsWithSlash = pathInContext.endsWith(URIUtil.SLASH);
 
         // Find the resource 
         Resource resource = null;