Simplify nonif expressions while deobfuscation too

Regexp deobfuscation.
Implicit coercion handling.
#1145 double not (!!) fix

libsrc/ffdec_lib/src/com/jpexs/helpers/utf8/Utf8Helper.java

@@ -18,6 +18,7 @@ package com.jpexs.helpers.utf8;
 
 import java.io.UnsupportedEncodingException;
 import java.net.URLDecoder;
+import java.net.URLEncoder;
 import java.nio.charset.Charset;
 
 /**
@@ -36,6 +37,14 @@ public class Utf8Helper {
         }
     }
 
+    public static String urlEncode(String s) {
+        try {
+            return URLEncoder.encode(s, "UTF-8");
+        } catch (UnsupportedEncodingException ex) {
+            throw new Error(ex);
+        }
+    }
+
     public static byte[] getBytes(String string) {
         return string.getBytes(charset);
     }