Handle empty cycles on portfolio summary

[perryr16]

Any background context you want to provide?

What's this PR do?

Handles the case when the current cycle (or baseline cycle) has no data.

Note: Things break down if baseline and current cycles have no overlapping data. The property filter can only filter one cycle at a time, meaning the second filter request uses the property ids from the first. If there are no overlapping properties the second filter will return empty. Fixing this would be very difficult.

How should this be manually tested?

create a goal with an empty baseline cycle create a goal with an empty current cycle create a goal with empty current and baseline cycles

What are the relevant tickets?

Screenshots (if appropriate)

Current Cycle Empty Baseline Cycle Empty Both Cycles Empty

[perryr16]

closing to resolve conflicts locally