When a newcomer hits the routing error page they are often confused about how to trouble shoot the next step. Adding a simple help text can gently remind coders where to get more help.
Allow symbols to be passed as extension aliases in Mime::Type.register
Fix favicon_link_tag help text
…al in production.
* e.g. blog_url(subdomain: current_user) instead of blog_url(subdomain: current_user.to_param)
log exception backtrace when all backtrace lines silenced