[Bug 968888] Model changes to enable post event data.

* Rename expected outcome field.
* Add model field for the real outcome.
* Add field for the actual attendance.
* Add flag to seperate events with old metrics.
[bug 946705] Update Google Analytics options.

* Mask IPs that are send to Google.
* setAllowLinker == true
* setAllowAnchor == true
[bug 946697] Force HTTPS for analytics.
Merge pull request #760 from glogiotatidis/analytics

Analytics
[fix bug 1011744] Do not send report notifications to new reps.
Merge pull request #759 from akatsoulas/1011744

[fix bug 1011744] Do not send report notifications to new reps.
[fix bug 1007703] Allow members of Council and Mentor groups to create polls.
Merge pull request #743 from akatsoulas/1007703

[fix bug 1007703] Allow members of Council and Mentor groups to create new votes.
[Fix bug 968888][Fix bug 1011180] Add post event data form.

* Make past events with old metrics compatible with new metrics
* Force new metrics in current & future events
[Fix bug 1004777] Display post-event metrics on event page.
Merge pull request #749 from johngian/post-event-form

Add post event data in event metrics form.