Merge pull request #623 from Viper-7/master

Minor tweaks to 32-bit warning message
ADDED: Display total/free system memory in the console log
ADDED: Console notification when a default PermSize is applied
derpdy derp typo
CHANGED: Only copy mods + configs from appdata on force update or version change
CHANGED: Fixed progress display of asset downloads
CHANGED: Don't re-download pack archives when the cached copy already matches the expected MD5