Few fixes/tweaks for the Cache app, but still a bit to go

Hey man,

Here are a few things I did to tweak the application. There's actually a few more things to do to make it more secure, but I figured I had already changed a lot of things already :)
I wanted to have button colors for after you create a listing, so that way I could style the "Delete" button to be red, which shows up now on the listing/show page.