Fix typo
Fix destination of index of :files
Fix the flash warning message
Make sure there is a flash before try to change it
Fix script creating date
Scan and download attachments (in Wiki pages)
Fix the download url in attachment
Fix the download url in attachment (2nd pttern)
Fix filename of the attachment in case it is missing
attachment should not end by /
Some attachment may need to use identity to get the right url

for example, http://dragula.org//attachments/download/78/bash.rb

-> http://dragula.org//attachments/download/78 (HINH_4.png)

This is often due to user error when making the link
New way to fix url when downloading attachment

However this is a buggy way bc some files are not download as expected
download attachment: good version using file id