Pixel event should be enhanced with Recurring Donations

[mathetos]

User Story

As a Recurring Donations user, I want to see the pixel reflect the entire amount that a donor will give over the course of their recurring lifecycle so that my FB data is more accurate.

Details

Currently, the pixel only sends the initial amount that a donor donates. In the case of recurring, this doesn't adequate reflect how much they will give over the course of a given year or the course of the recurring lifecycle.

If recurring is present, the pixel should do the following:

1. If there is an length of time set for the form that the donation should recur for (like 6 months), the total amount of the donation should be multiplied by that length of time.

2. If the length of time is set to "ongoing" the donation amount should be set to 12 months, with a filter that can be changed if users prefer.

Acceptance Criteria

• The correct math is applied to the total amount when a length of time is set for the recurring period
• When the length of time is set to "ongoing" the total amount correctly reflects the initial donation multiplied by 12
• A filter is in place for the ongoing multiplier, and works as intended when leveraged in custom code
• When the form supports both one-time and recurring, both the one-time donation pixel amount is correct, and the recurring donation pixel amount is correct
• If a form has disabled recurring, the recurring functionality does not negatively impact the one-time donation in any way