Show messages related to a report when editing existing reports

* Also show list to all messages by reporter X
* Show original message
* Show if reporter was trusted

Screenshot of better show messages info:
![Screen Shot 2013-03-04 at 1 10 24 PM](https://f.cloud.github.com/assets/7965/215044/4dd40272-8460-11e2-9a7d-ff3eeb2df1e6.png)