Updated pack delete icon

Signed-off-by: Dalton Pelc <daltonjpelc@gmail.com>
Forgot the inverted version

Signed-off-by: Dalton Pelc <daltonjpelc@gmail.com>
Asset MD5 checking
Check MD5's on assets and update if necessary
Show custom modpack name if no logo
Merge branch 'dev' of github.com:TechnicPack/TechnicLauncher into dev

Conflicts:
	src/main/java/org/spoutcraft/launcher/skin/MetroLoginFrame.java
	src/main/java/org/spoutcraft/launcher/technic/skin/ModpackSelector.java