making logging less noisy. first off, filters out any firefox errors (or clients that dont send a version). i just dont care anymore. also it now filters out the filesystem path up until /data/app/... which a) makes turtl a bit more private (we dont need their life story just to report an error, and it reduces things like "/home/sam/pr0n/utils/turtl/data/app/turtl.js:42 Undefined reference to BlahController" and b) makes the de-duping a lot more accurate.