fixed populate script and add it as management command
add edit and delete button for questions and answers, closes #183
add message for non student users, closes #175
Minor change to about page text. games becomes activities.
Merge branch 'v2UI-population-script' into v2UI
Merge branch 'v2UI-edit-qa' into v2UI
Changes new question alert for non-student users to yellow for caution.
Merge branch 'v2UI-new-question-message' into v2UI