Removed Nami legacy logic to handle DateTime objects from the database. Strings are now returned from the database so this bit of code is no longer necessary.
Revert "Removed Nami legacy logic to handle DateTime objects from the database. Strings are now returned from the database so this bit of code is no longer necessary."

This reverts commit 6a068e8a21ef31eb85c726bc27cc172aab69aa78.
Merge master into latest for 0.9.8. We've completed the merge with WordPress 3.6.