Fix parsing of negative limits in Lauris parameters.

- VERBESSERUNG: Keine Fehlermeldung mehr, falls Referenzbereiche negative Werte enthalten (wie z.B. Base Excess) [#650db4d2]

zaaReloaded2/Importer/ZaaImporter/LaurisItem.cs

@@ -134,7 +134,7 @@ namespace zaaReloaded2.Importer.ZaaImporter
         {
             if (match.Groups["limits"].Success)
             {
-                Regex limitRegex = new Regex(@"\[(?<limit1>[\d.]+)?\s*(?<operator>\S+)\s*(?<limit2>[\d.]+)?]");
+                Regex limitRegex = new Regex(@"\[(?<limit1>[-\d.]+)?\s*(?<operator>\S+)\s*(?<limit2>[-\d.]+)?]");
                 Match limitMatch = limitRegex.Match(match.Groups["limits"].Value);
                 if (limitMatch.Groups["limit1"].Success && limitMatch.Groups["limit2"].Success)
                 {