get_device_info: correctlz decode string for device name

...and adapt nxtfilemgr accordingly

nxt/system.py

@@ -217,7 +217,7 @@ def get_device_info(opcode):
 
 def _parse_get_device_info(tgram):
     tgram.check_status()
-    name = tgram.parse_string(15)
+    name = tgram.parse_string(15).decode('windows-1252').split('\0')[0]
     a0 = tgram.parse_u8()
     a1 = tgram.parse_u8()
     a2 = tgram.parse_u8()

scripts/nxtfilemgr

@@ -282,13 +282,11 @@ class NXT_FileMgr(Gtk.Window):
             prot_version, fw_version = self.brick.get_firmware_version()
             print("Protocol version: %s.%s" % prot_version)
             if prot_version == PROTOCOL_VER:
-                brick_name_b, brick_hostid, brick_signal_strength, brick_user_flash = self.brick.get_device_info()
+                brick_name, brick_hostid, brick_signal_strength, brick_user_flash = self.brick.get_device_info()
                 connection_type = str(self.brick.sock)
-                brick_name_str = brick_name_b.decode('windows-1252')
-                print("brick_name_b = {0}, brick_name_str = {1}".format(brick_name_b, brick_name_str))
                 if DEBUG:
-                    print("Brick Info: ", connection_type, brick_name_str, brick_hostid, brick_signal_strength, fw_version, brick_user_flash)
-                self.brick_info_str = "%s ==> %s [%s]\tFirmware: v%s.%s\tFreespace: %s" % (connection_type, brick_name_str, brick_hostid, fw_version[0], fw_version[1], brick_user_flash)
+                    print("Brick Info: ", connection_type, brick_name, brick_hostid, brick_signal_strength, fw_version, brick_user_flash)
+                self.brick_info_str = "%s ==> %s [%s]\tFirmware: v%s.%s\tFreespace: %s" % (connection_type, brick_name, brick_hostid, fw_version[0], fw_version[1], brick_user_flash)
             else:
                 print("Invalid Protocol version! Closing connection.")
                 self.do_housekeeping()