Activity items identity themselves as `Image`

![screen shot 2014-08-19 at 16 48 09](https://cloud.githubusercontent.com/assets/109850/3968586/4c4af5ee-27b8-11e4-9fe4-4b8a5fcdf06b.png)

All of this can be shortened quite a bit by moving the `casper.waitForSelector('ul.oae-list li[data-id="' + content1Profile.id + '"]'` into the `verifyListItem` function. Also, I'm going to move the content items into a single function:

```
                                            // Verify that all content items are displayed correctly in the content library
                                            casper.thenOpen(configUtil().tenantUI + '/me/library', function() {
                                                casper.echo('Verify content item metadata', 'INFO');
                                                verifyListItem(contentProfile1);
                                                verifyListItem(contentProfile2);
                                                verifyListItem(contentProfile3);
                                                verifyListItem(linkProfile);
                                                verifyListItem(collabdocProfile);
                                            });

                                            // Verify that a discussion is displayed correctly in the discussion library
                                            casper.thenOpen(configUtil().tenantUI + '/me/discussions', function() {
                                                casper.echo('Verify discussion list item metadata', 'INFO');
                                                verifyListItem(discussionProfile);
                                            });

                                            // Verify that a group is displayed correctly in the group library
                                            casper.thenOpen(configUtil().tenantUI + '/me/groups', function() {
                                                casper.echo('Verify group list item metadata', 'INFO');
                                                verifyListItem(groupProfile);
                                            });

                                            // Verify that a user is displayed correctly in the network
                                            casper.thenOpen(configUtil().tenantUI + '/me/network', function() {
                                                casper.echo('Verify user list item metadata', 'INFO');
                                                verifyListItem(user2);
                                            });
```