[BUG] Map shows too many records

[jkdru]

A clear and concise description of what the bug is.

Map shows records that are correctly hidden in tables.
Can we program map views to consistently apply the same master rule that filters records in tables? Show only if archival_only = False (Every mappable table/class has this field.)

Steps to reproduce the behavior:

1. Go to https://matchmapper-philly.herokuapp.com/map/sites_all/
2. Notice count at lower right: "362 of 232 records..." (first number should not be bigger)

(Screenshots and environment unnecessary)

[isaacwasserman]

ef81840 should fix this. @jkdru would you mind testing?