Fix instances not being playable after a failed login
Real fix for not being able to play an instance after failign to login
Add in ability to install multiple texture packs/resource packs into a
single texture pack/resource pack so multiple components can be used at
once
Fix wrong version name showing up on success/failed dialog boxes after
an instance is installed
Merge pull request #2 from RyanTheAllmighty/master

Merge Ryans changes