Additional Feature for the Counter Visualisation

The current counter visualisation does not have label format, which is feature found in all the other visualisation. This is especially handy when displaying percentages in the counter. Right now the only way to display percentages is to multiply the value by 100 and adding the % suffix after. Also the counter does not seem to display 0 as a value. I get a blank when there is a zero value that is parsed through the counter. This should display zero.