Add new flags

Add following missing flags (Need to be added in database):
af -> Afghanistan
ax -> Aland Islands
bs -> Bahamas
bq -> Caribbean Netherlands
td -> Chad
cw -> Curacao
gq -> Equatorial Guinea
gf -> French Guiana
gg -> Guernsey
im -> Isle of Man
je -> Jersey
ko -> Kosovo
mq -> Martinique
me -> Montenegro
ne -> Niger
bl -> Saint Barthelemy
mf -> Saint Martin
rs -> Serbia
sx -> Sint Maarten
ss -> South Sudan
tl ->Timor-Leste
um -> United States Minor Outlying Islands