signed_networks: Paper: beginning to implement tables computed in "Signed Networks in Social Media"(http://www.cs.cornell.edu/home/kleinber/chi10-signed.pdf) paper to compare if their findings hold true for our dataset
signed_networks: Paper: table1: number_of_traids renamed to number_of_traids_for_a_country
signed_networks: Paper: table1: number_of_traids function returns total number of traids in the network