Differentiate placeholder reason from inputted reason for missed HM

[esoccoli]

In the missed house meetings table on the dashboard, it displays the date of missed HM, as well as a reason. It should be easy to tell whether the displayed reason is a user inputted reason, or if it is displaying the default value bc no reason was provided

This could be done by making the style different, or by changing the text to something that says that no reason was provided