Nice job, this looks really useful - would certainly help for the times when I'm stuck with no internet access and need to look something up. One minor niggle

Nice job, this looks really useful - would certainly help for the times when I'm stuck with no internet access and need to look something up. One minor niggle - when I changed the file I wanted to use in settings, there was no confirmation or notification to let me know it was downloading the new file. I ended up stopping the download, erasing the data and starting again, to be sure. It might be worth adding in a confirmation to let users know it was changed OK, and is being re-downloaded.