Homestyx hydra

R1:a8866c0b314f

In Maniphest, don't render the task graph drawing if we're only showing parents/children

Summary:
Ref T4788. I thought I implemented this, but actualy didn't.

When we're in the "mid-sized" fallback mode (graph has more than 100 nodes, but not more than than 100 parents/children), don't actually draw the graph. It's almost always uninteresting and huge.

Instead, this just renders a list of direct parents, then the task, then the direct children, which is pretty straightforward.

Test Plan: Set limit to 5…
Repository: R1 hydra
Commit Date: Nov 7 2016