Pin images don't appear in data explorer

[seanh]

When minified files are in use (set debug = false in ini file) the pin images for points don't show up in the data explorer map view when viewing a resource with geolocation data.

set debug = true will fix the problem by using unminified files instead but also turns on a bunch of debug stuff you wouldn't want on a production site.

middleware.py, around line 73, is where the decision to turn minified files on or off based on the debug setting is made. This can be hacked on a production site to run with unminified files but otherwise run on production mode thereby getting around the issue with the pins. But that doesn't fix the underlying bug.