Added support for auto complete and misc fixes
 * [JS, EEL, WALTER] added auto completion for built-in functions (EEL, JS) and keywords (WALTER)
 * [JS, EEL] fixed local/global/instance parameters
 * [JS, EEL] added support for namespace function parameters (a*)
 * [JS] fixed slider description when using various characters that were not letters
 * [JS] added support for gfx_ext_retina, import and options:gmem