Sorry, but from what has been said there are links to external sites that could also be responsible for the alerts so it isn't just what is on your site.
For instance the very first reply, the link to virustotal's analysis, in the Links element show external link to bitninja.io, which has also been mentioned in another post, Reply #7.
There is little point i us posting information if it isn't being followed up.
Avast will only remove it if it is confirmed to be a false positive.