Start asset url's with a slash.

[arjanfrans]

I have multiple maildev instances behind a proxy, that does proxying for multiple stage/test environments. The url to the instances look like this:

example.com/environment-1/maildev/
example.com/environment-2/maildev/

This works if the url ends with a slash. But if I leave out the slash, it tries to load the assets relative to example.com/environment-2. I believe the easy fix for this would be to start the css/js url's with a slash.

[kgeis]

It seems to me that if you start the asset URLs with /, it will load them relative to example.com/.