Add an UTF-8 option to the web interface.

* wrap/python/ajax/ltl2tgba.html: Add the checkbox.
* wrap/python/ajax/css/ltl2tgba.css: Add the necessary class.
* wrap/python/ajax/protocol.txt: Add the new option.
* wrap/python/ajax/spot.in: Handle it.
* wrap/python/ajax/README: Add a few lines to explain
how to run the CGI script from the command line for debugging.

wrap/python/ajax/css/ltl2tgba.css

@@ -84,6 +84,10 @@ table.ltltable
     text-transform: capitalize;
 }
 
+.floatright {
+    float: right;
+}
+
 .ltl2tgba .head .ui-icon {
     float: right;
     margin: 1px 0px;