Daily trace summary AJAX action field can contain commas

[bobbingwide]

The following line in the daily trace summary file from oik-plugins.co.uk for 20200209 has a AJAX action which contains unescaped commas.

/plugins/download/?plugin=oik-bwtrace-debug-trace-for-wordpress&version=3.0.0-RC2&id=37451&action=download.%2C%29%2C%29%27%29%29%22%27,download.,),)'))"',0.340538,7.3.14,1726,4709,400,44,464,57,34,20,19,0.010370969772339,,,,7588,45.227.255.149,0.340430,2020-02-09T02:15:51+00:00,Opera/9.80 (Windows NT 5.2; U; en) Presto/2.2.15 Version/10.00,GET

This causes problems for post processing of the daily trace summary files.