finished customer load through space and building meter apportionments, haven't put actual images or bill data files yet
made some major revisions to functions that get data for views, may not be fully correct, but previous versions need to be updated to handle NaNs better; also tweaked some rate schedules that were failing on get_cost_df
one small typo
reset get_XXX_view_meter_data functions back to old versions without latest attempt to deal with nans, seems to be working, also moved meter data gathering out of meter_detail view and into meter object methods
switch to heroku
more work on heroku account view
testing ajax example
more ajax testing
more ajax testing 2
more ajax
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