Factor generation for Interactive

[szarnyasg]

Study the required Interactive factors:

ldbc_snb_datagen_spark/paramgenerator/readfactors.py

Lines 6 to 11 in efbeb57

	FACTORS = [
	#friends posts likes tags forums companies comments
	"f", "p", "pl", "pt", "g", "w", "pr",
	"ff", "fp", "fpt", "fg", "fw", "fpr", # note: no likes, fpr is unused in the code
	"ffp", "ffpt", "ffg", "ffw", # note: no friends/likes/comments
	]

The meaning of the matrix:

                             number of:   friends   posts   likes   tags   forums   companies   comments
person's
person's friends'
person's friends of friends'

[szarnyasg]

Partially resolved by #397 which includes first names and person's friends of friends' -- but most of the factor tables are still missing.