Screenshot is partly working

Signed-off-by: filipe garcia <filipe.c.garcia@gmail.com>
updated html2canvas minified version

Signed-off-by: filipe garcia <filipe.c.garcia@gmail.com>
ignoring the modal box from the screenshot

Signed-off-by: filipe garcia <filipe.c.garcia@gmail.com>
added comments

Signed-off-by: filipe garcia <filipe.c.garcia@gmail.com>
added logging option

Signed-off-by: filipe garcia <filipe.c.garcia@gmail.com>