Update for //reboot (#1051)

* Update for //reboot

This reboots pyplanet after 50 seconds and not kills it. (Windows)

* [Windows] //reboot works now

pyplanet/apps/contrib/admin/pyplanet.py

@@ -1,6 +1,8 @@
 """
 Player Admin methods and functions.
 """
+import os
+
 from pyplanet.contrib.command import Command
 
 
@@ -21,4 +23,9 @@ async def on_start(self):
 		)
 
 	async def reboot_pool(self, player, data, **kwargs):
-		exit(50)
+		if os.name == 'nt':
+			os._exit(50)
+			os.execl(sys.executable, sys.executable, *sys.argv)
+		else:
+			exit(50)
+