Checkmk Werk 15855: Improve rendering of small values in percentage Perf-O-Meters

ID: 15855 Title: Improve rendering of small values in percentage Perf-O-Meters Component: metrics Level: 1 Class: Bug fix Version: 2.3.0b1 Values smaller than 0.0001% were displayed in scientific notation by Perf-O-Meters. Since this notation is of limited use to most users, we instead display values using two decimal places at most as of this werk. Hence, values smaller than 0.01% will be displayed as `<0.01%`, except for exactly 0%, which will be shown as `0%`. The actual value of the metric can be looked up in the <i>Service Metrics</i> field of the service details.