Last Thursday saw two holidays at once, and one big day for Instagram. For the first time in 125 years, the Jewish holiday of Hannukah and the American holiday of Thanksgiving overlapped. Because both holidays involve traditional foods, and people are obsessed with photographing their meals, Thanksgivukkah was also the biggest day Instagram has ever had. Even though the holidays are meant to be about family, people couldnt resist the draw of social media, and spent the day posting photos on Instagram, hoping their turkey would somehow look significantly better than anyone elses. …