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/7965/215213/1c180f86-8473-11e2-9adb-0de1a539c4c5.png)