[website deploy] Find references to missing assets files. Helps to prevent 404 and 500 (pagespeed beacon) errors.

asset-clean

#!/bin/bash
set -e
find . -print0 |fgrep -v --null-data --null '/.hg/' >tmp-asset-clean-all
egrep -hIor "/\w+/\w+\.(gif|jpg|jpeg|png|eot|svg|ttf|woff|webm|webp)" |sort -u >tmp-asset-clean-refs
for f in $(cat tmp-asset-clean-refs); do
  dir=${f%%/*}
  name=${f##*/}
  if ! egrep --max-count=1 --null-data -q $f tmp-asset-clean-all; then
    echo -e "\n\n$f not found. References:\n $(egrep -Inr $f)\n\n"
  fi
done
rm -f tmp-asset-clean*