Made the launcher directly download the correct minecraft version.

Signed-off-by: Dalton Pelc <daltonjpelc@gmail.com>
moved url fetch off the event thread
switched indentation from spaces to tabs
Fixed warnings/formatting

Signed-off-by: Dalton Pelc <daltonjpelc@gmail.com>
Merge branch 'master' of https://github.com/TechnicPack/TechnicLauncher