edit img flags and add esperanto flag

codes.php

@@ -175,7 +175,7 @@ class Codes{
     'se_NO' => 'no',// revisar
     'mt_MT' => 'mt',
     'bs_Latn_BA' => 'ba',// revisar
-    'eo' => 'es', // revisar
+    'eo' => 'eo', // esperanto this language does not have country
     'haz' => 'af',
     'ary' => 'ma',
     'oci' => 'es',
@@ -191,9 +191,9 @@ static function languageCode2CountryCode($languageCode) {
     if(array_key_exists($languageCode, self::$array_codes)){
       return self::$array_codes[$languageCode];
     }
-    
+
     return false;
   }
-  
+
 }
-?>
+?>

css/flags/flags_16x11.css

@@ -1,3 +1,6 @@
+/*
+ * This style rules for flags were taken from this url https://www.flag-sprites.com/
+ */
 .flag_16x11 {
 	width: 16px;
 	height: 11px;
@@ -256,3 +259,4 @@
 .flag_16x11.flag-zanzibar {background-position: -160px -165px}
 .flag_16x11.flag-zm {background-position: -176px -165px}
 .flag_16x11.flag-zw {background-position: -192px -165px}
+.flag_16x11.flag-eo {background-position: -208px -165px}

css/flags/flags_32x32.css

@@ -1,3 +1,6 @@
+/*
+ * This style rules for flags were taken from this url https://www.flag-sprites.com/
+ */
 .flag_32x32 {
 	width: 32px;
 	height: 32px;
@@ -226,3 +229,4 @@
 .flag_32x32.flag-za {background-position: -320px -448px}
 .flag_32x32.flag-zm {background-position: -352px -448px}
 .flag_32x32.flag-zw {background-position: -384px -448px}
+.flag_32x32.flag-eo {background-position: -416px -448px}

uls-options.php

@@ -383,6 +383,11 @@ static function sort_translations_callback($a, $b) {
     return strnatcasecmp($a['english_name'], $b['english_name']);
   }
 
+   /*
+    * this function dowload automaticaly the langue from the https: official page
+    * this funcion check if the class ZipArchive is available and check the openss available too
+    * this class needs the last requirements to can download and unzip the language
+    */
   static function download_language() {
     $data = explode(";", $_POST['info_language']);
     $remoteFile = $data[1];