Changed rolling stat to evaluate to None if the rolling window extends
beyond the start of the data collection (i.e. 7 day rolling stat with
only 6 days of data).
Rush to hacky some fixes before a cron job runs and ruins my data base
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tweaked rolling stat data collection. printing lenght of stats on
profile
page for debugging.
cleaned up FAQs
added img urls for copies. still need to sort out if image does not
exist.
added new plots
added intermediate plot method so i can add fancy plot methods in
future
removed image not found redirect for now. not sure if it's necessary.
major overhaul of stats calculation methods.
stats, profiles, crons, plots, all updated.
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