replace "Only Status Changes" with "No time spent" in weekly report

In Eventum weekly report the filter "only status changed" did not work as intended and did not help filter out issues that were only changed (updated) - not worked with.

In order to make it work as was originally intended it would have been necessary overview all of the history types and sort them into categories "I worked on this issue" and "I only changed the status of this issue"

However I presume that it would be quite difficult as initially categorize the history types, then manage the list and overall give users a clear indication of what is considered a "Status Change".

Therefore, I suggest we replace "Status changed" with "No time spent" - that will group up issues with no timetracking.