toggle rails class caching in canvas

toggle-class-cache.sh

function toggle-class-cache() {
  cfg=config/environments/development-local.rb
  if grep -q config.cache_classes $cfg; then
    sed -i '
        /config.cache_classes/ s/true/false/
        t
        s/false/true/' \
      config/environments/development-local.rb
  else
    echo "config.cache_classes = false" > $cfg
  fi

  grep config.cache_classes $cfg
  pkill -f script/server
}