remove Application Data from path to I2P service config on Windows

When I2P is installed as a service, it uses C:/ProgramData/Application Data/I2P as it's working directory. C:/ProgramData/Application Data/ has special meaning in new Windows versions, which prohibits directory listings. This causes Jetty to be unable to see the content of the eepsite/docroot directory, causing all sites to 404 and the Jetty server to behave erronously.

router/java/src/net/i2p/router/startup/WorkingDir.java

@@ -110,8 +110,19 @@ public class WorkingDir {
                     }
                 }
                 String programData = System.getenv("PROGRAMDATA");
-                if (home.toLowerCase().contains(programData.toLowerCase()) || home.toLowerCase().contains("system32".toLowerCase())) {
-                    home = programData;
+                String winDirSystem32 = System.getenv("WINDIR");
+                if (winDirSystem32 != null) {
+                    winDirSystem32 = new File(winDirSystem32, "system32").getAbsolutePath();
+                }
+                if (winDirSystem32 != null) {
+                    if (home.toLowerCase().startsWith(winDirSystem32.toLowerCase())) {
+                        home = programData;
+                    }
+                }
+                if (programData != null) {
+                    if (home.toLowerCase().startsWith(programData.toLowerCase())) {
+                        home = programData;
+                    }
                 }
                 dirf = new SecureDirectory(home, WORKING_DIR_DEFAULT_WINDOWS);
             } else if (SystemVersion.isMac()) {