... so that the users can see their today stats.
we've received many emails from users who didn't notice that yesterday was selected by default (the UI is quite bad at this level btw)
Christian, it doesn't work, because if you add a new website it has to do the same for this new website you must compare the value against Site->getCreationDate()
(In ) - fix #5594: The first day piwik has been installed, date should default to "today" instead of yesterday. Thanks Christian for the patch