Update team page

[chinandrew]

From Roni/Christy:

Add to Core Members

• Christy Melucci, CMU/MLD
  

Move from Members to Past Members and included end date noted below

• Ana Karina Van Nortwick: Tech Writer, Oct 2020-Jan 2021

Add to Advisors

• Michael Finke: M*Modal
  Photo (crop in):
  

Move from Google Fellows to Past Members

• All Google Fellows except Raphael Hyde and Kate Harwood (completed in update team pages #315)

Move from Contractors to Core Members

• Samuel Gratzl, Data visualization consultant
• After moving Samuel Gratzl, remove/hide the Contractors section

Move from Contributors to Past Members and included the end dates where noted below

• Jenny Lee: CMU/HCII, Intern, Summer 2020
• Natalia Lombardi de Oliveira, CMU/Stat, Core member, March-May 2020
• Adam Perer, CMU/HCII, Core member, March-October 2020
• Vishnu Shankar, Stanford University, Intern, Summer 2020
• Venkatesh Sivaraman, CMU/HCII, Summer 2020

Update in Past Members
Add additional details (shown here on bold text for clarity only)

• Amartya Basu, CMU/INI, Intern, Summer 2020
• Robin Han, CMU/HCII, Summer 2020
• Michael Liu, CMU/HCII, Core member, March-April 2020; Contributor Summer 2020
• Kristin Williams, CMU/HCII, Core member, March-April 2020; Contributor Summer 2020

Update in Contributors
Add additional details (shown here on bold text for clarity only)

• Jimi Kim, University of Texas at Dallas, Core member, March–April 2020

Other

• Standardish dash symbol. e.g. Natalia Lombardi de Oliveira has – while Adam Perer has -. Use the former (en dash)