add notification for failed upload
add notification for failed upload

codegaze/jekyll-admin,codegaze/jekyll-admin,jekyll/jekyll-admin,jekyll/jekyll-admin,ashmaroli/jekyll-admin,jekyll/jekyll-admin,ashmaroli/jekyll-admin,ashmaroli/jekyll-admin,codegaze/jekyll-admin,jekyll/jekyll-admin,ashmaroli/jekyll-admin,codegaze/jekyll-admin