Check_MK Werk 5345: mssql_backup: fix GUI error and show warn/crit values

ID: 5345 Title: mssql_backup: fix GUI error and show warn/crit values Component: Checks & agents Level: 1 Class: Bug fix Version: 1.5.0i1 Fixes an error visible in the GUI when no parameters are present for the check. The check now also shows warn and crit values for a backup type if it is in a warning or critical state.