[bug] Assigning an existing geographic location is broken

[nemesifier]

How to replicate:

• create a device
• create a geographic location in a separate step
• go to the device created in the first step, then go to map tab, select "Existing"
• select the geographic location just created
• hit save

Expected result:

• when the location is selected, the geo information should appear
• device is saved normally

Actual result:

• when the location is selected, the geo information does not appear
• device is not saved because a validation error

[niteshsinha17]

@nemesisdesign This Issue is coming from django-loci. I have confirmed and solved it.