Display successful flags as activities

[bpred754]

If it is determined that a user flagged an activity correctly, a new activity should be created that awards them "Community" skill experience. This activity should also be displayed in the View Activity and activity transition on the dashboard screen.

Possible implementations for cards (How do we represent the community activity)
First, display text along the lines of "Correctly flagged classfication1 as classification2", then:

• Show the flagged activity inside the community activity (activity in an activity - this could look messy, especially for the activity-transitions)
• Alter the text: "Correctly flagged user activity with classification of classification1 as classification2" where the user would be the original user, activity would be a link that displayed a popup of the flagged activity, and the classifications would be the before and after.