change to use regex to do the domain mappings. Also add config to AWS to be able to set from configuration file.
handle cases where HTTP_HOST is none, like in unit tests
add linefeed at end
fix up regex matches
switch to use thread local storage to hold the request itself
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convert over to use open source 3rd party library
convert over to use django-cum
add unit test
remove comment
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add comment to config setting
fix comment
use better regex for localdev
no need to break
no need to wrap an imported function, it's visible to any file that is importing us
add comment
add unit test
clean up test
use a separate env file to set the preview hostname
