fix broken tests (they were fixed in master, but not in develop?)

scripts/tests/faction.lua

@@ -5,6 +5,13 @@ module ('tests.eressea.faction', package.seeall, lunit.testcase)
 local f
 
 function setup()
+    conf = [[{
+        "races": {
+        "human" : {}
+        }
+    }]]
+    eressea.config.reset()
+    assert(eressea.config.parse(conf)==0)
     f = faction.create("faction@eressea.de", "human", "de")
     assert(f~=nil)
 end