minor bug fixes, make archive sketch auto-save before running

app/tools/Archiver.java

@@ -54,6 +54,20 @@ public class Archiver {
 
 
   public void show() {
+    // first save the sketch so that things don't archive strangely
+    boolean success = false;
+    try {
+      success = editor.sketch.save();
+    } catch (Exception e) {
+      e.printStackTrace();
+    }
+    if (!success) {
+      Base.showWarning("Couldn't archive sketch",
+                       "Archiving the sketch has been canceled because\n" +
+                       "the sketch couldn't save properly.", null);
+      return;
+    }
+
     File location = editor.sketch.folder;
     String name = location.getName();
     File parent = new File(location.getParent());