Added option to download jagexappletviewer.jar directly thanks to Mod
Philip

Also made the jar the default download if jagexappletviewer.jar dont
exist.
Added a forgotten Kalio
Updated the changelog and bumped version to 4.2.1
fix misspelling
Merge remote-tracking branch 'origin/development' into bleeding-edge
Merge remote-tracking branch 'origin/bleeding-edge'

Add the option to download the jagexappletviewer.jar directly
and make the client download the jar directly if it doesn't exist