Filter JCR Content Selectively

[Carl Hall]

I have UI static content files for client side rendering that lives in JCR
under /dev.  I'd like to filter this content a bit to replace message keys with
language specific text as this step is currently being done on the client by
javascript.  I'd prefer to not make these files into server side scripting
files.  What's the best way to have everything under /dev get passed through
a response filter/servlet?