Updated for the newer icon/logo in the launcher. Also updated for the newer Minecraft assets URL, and fixed some missing folder issues in certain cases causing crashes

Signed-off-by: Dalton Pelc <daltonjpelc@gmail.com>

Conflicts:
	src/main/java/org/spoutcraft/launcher/UpdateThread.java
	src/main/java/org/spoutcraft/launcher/skin/MetroLoginFrame.java
	src/main/java/org/spoutcraft/launcher/technic/rest/RestAPI.java
	src/main/resources/exe/icon.ico
	src/main/resources/header.png
	src/main/resources/icon.png
	src/main/resources/splash.png