dmx_htm_fixes (#1070)

* Update cdata.js

* Update html_settings.h

* Update settings.htm

* Update settings_dmx.htm

* Add %DMXMENU% to cdata.js

* Fix single % being treated as template in settings.htm

Co-authored-by: cschwinne <dev.aircoookie@gmail.com>

tools/cdata.js

@@ -202,6 +202,10 @@ writeChunks(
       append: ")=====",
       method: "plaintext",
       filter: "html-minify",
+      mangle: (str) =>
+        str
+          .replace("%", "%%")
+          .replace(/User Interface\<\/button\>\<\/form\>/gms, "User Interface\<\/button\>\<\/form\>%DMXMENU%"),
     },
     {
       file: "settings_wifi.htm",