Fix: set UTF-8 encoding for the HTML

Author: OndrejSpanel

tray-util/src/main/scala/com/github/opengrabeso/loctio/HtmlPanel.scala

@@ -3,6 +3,7 @@ package com.github.opengrabeso.loctio
 import java.awt.Desktop
 import java.io.ByteArrayInputStream
 import java.net.URL
+import java.nio.charset.Charset
 
 import org.xhtmlrenderer.simple.XHTMLPanel
 import org.xhtmlrenderer.swing.NaiveUserAgent
@@ -28,7 +29,7 @@ class HtmlPanel(baseUri: String) extends Panel {
 
   def html: String = throw new UnsupportedOperationException("HTML document is write only")
   def html_=(text: String): Unit = {
-    val is = new ByteArrayInputStream(text.getBytes)
+    val is = new ByteArrayInputStream(text.getBytes(Charset.forName("UTF-8")))
     val url = baseUri
     peer.setDocument(is, url + "/")
   }