download progress gives random % in splash screen

[JansenSmith]

the % on top seems random.

println "Trying to download "+piece_url

// Load the .CSG from the disk and cache it in memory
CSG piece  = ScriptingEngine.gitScriptRun(
	"https://github.com/JansenSmith/downloadSTL.git", // git location of the library
	"downloadSTL.groovy" , // file to load
	// Parameters passed to the function
	[piece_url]
	)