Fixed a bug where key files with the asc extension weren't getting loaded
Fixed a bug where key fetching wasn't working when the tool was accessed through HTTPS
Changed default key server to MIT's
Key server port will now default to 80/443 depending on how the tool is accessed
Note: Key servers need to support Access-Control-Allow-Origin: * as well as HTTPS when the tool is accessed through it to work. The new default does both.
