[JRO] Less greedy with the asset compilation
[JRO] Less greedy with the asset compilation

There are issues with asset precompilation when using the greedy,
front-loaded, regex looking for any thredded*.(css|js). Changing that to
look for JUST thredded.js and thredded.css fixes the asset
precompilation issue.

TL;DR: Stop trying to be cute.

jayroh/thredded,jvoss/thredded,thredded/thredded,jvoss/thredded,jvoss/thredded,jayroh/thredded,thredded/thredded,thredded/thredded,jayroh/thredded,jvoss/thredded,thredded/thredded,jayroh/thredded