Merge branch 'master' into 'master'

Changed ProcessorId to SerialNumber

See merge request wetterstation/frontend!21

Wetterstation/Settings.cs

@@ -45,7 +45,7 @@ namespace Wetterstation
                 ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_Processor");
 
                 foreach (ManagementObject queryObj in searcher.Get()) {
-                    result = queryObj["ProcessorId"] + Environment.UserName;
+                    result = queryObj["SerialNumber"] + Environment.UserName;
                 }
             }
             catch (ManagementException e) {