some small updates to Interevent times codes
Added graphs of movements for single random users who we tracked in
interevent times as well.
added polting movements on a map using networkx, must say that gephi is
nicer. this works for single user. now will add for subpref and plot
all.
go through subprefs and create a map with usr movements (overall) from
that subpref to others. wider lines show more usrs moving.