Import fixes:

lightcurve_extraction.py: Add a try/except for newer Astropy versions that have finally removed the old LombScargle code location
core/plots.py: Move (currently unused) import of aplpy import into only routine that uses it.

neoexchange/core/management/commands/lightcurve_extraction.py

@@ -26,7 +26,10 @@
 except:
     pass
 from astropy.wcs import FITSFixedWarning
-from astropy.stats import LombScargle
+try:
+    from astropy.stats import LombScargle
+except ImportError:
+    from astropy.timeseries import LombScargle
 from astropy.time import Time
 from django.conf import settings
 from django.core.files.storage import default_storage

neoexchange/core/plots.py

@@ -218,7 +218,10 @@ def make_visibility_plot(request, pk, plot_type, start_date=None, site_code='-1'
 
 
 # def make_plot(request):
+#
 #     import aplpy
+#
+#
 #     fits_file = 'cpt1m010-kb70-20160428-0148-e91.fits'
 #     fits_filepath = os.path.join('/tmp', 'tmp_neox_9nahRl', fits_file)
 #