ENH: some small refines

1. don't sync_tooltip for it is not used
2. enable the dll black list
3. add some log

Change-Id: I4f7ea008121cf7252ef32680b68f063d146661e5

src/libslic3r/AppConfig.cpp

@@ -288,7 +288,7 @@ void AppConfig::set_defaults()
     if (get("backup_interval").empty()) {
         set("backup_interval", "10");
     }
-    
+
     if (get("curr_bed_type").empty()) {
         set("curr_bed_type", "0");
     }