Sethome working in the nether, factions too.

- Sethome depends on nether
- There is a home in the nether and another in the real world
- Factions no longer use mobf missing API
- Players' skin refreshed after only 2min

mods/factions/factions.lua

@@ -343,7 +343,7 @@ end
 --! @return true/false (succesfully changed privileges)
 -------------------------------------------------------------------------------
 function factions.set_admin(name,playername,value)
-	mobf_assert_backtrace(type(playername) == "string")
+	--mobf_assert_backtrace(type(playername) == "string")
 	if factions.data.factions[name] ~= nil then
 		if value then
 			factions.data.factions[name].adminlist[playername] = true
@@ -772,4 +772,4 @@ function factions.load()
 			end
 		end
 	)
-end
+end