add means to work with onPageCreated() stack and setPage() method
fix setPage()
modify setPage()
add bunch of methods and fixes
fix for cycle in deferred
rework 'before_func'
add some odc
add saveCaptchaImage() method
add some doc
add getScenario() and setScenario() methods
implement onParseCaptchaByElm() method
rework error handling
add captcha parsing
change captcha element
minor fixes