Cleanup of report overview table code

Code Review complains about string concatenation whitespace formatting in a bunch of places. In the report overview table, it complains on every column:

string concatenation should be formatted with a space separating the operators (dot .) and non-quote terms
$v['METRIC']['mval'] > $v['METRIC']['thresh'] ? ''.$v['METRIC']['val'].'' : $v['METRIC']['val'],

Rather than simply fix the spacing issue I rewrote this section of code to eliminate the redundancy and in-line html. Patch attached.