[finish #27470379] don't show launch campaign button for campaign ineligible for launching

frontend/templates/manage_campaign.html

@@ -65,7 +65,9 @@ The ending date can't be more than six months away- that's a practical limit for
 <p> To save your work, or to launch the campaign, click a button below.</p>
 
 <input type="submit" name="save" value="Save Campaign" />
+{% ifequal campign.status 'INITIALIZED' %}
 <input type="submit" name="launch" value="Launch Campaign" />
+{% endifequal %}
 </form>
 
 <h3>Premiums</h3>