bisign and bikey added

Bugfix: recently added Transnistria flag in olive was broken.

Added flag of disputed autonomous territory:

Northern Cyprus [CTR] (on user request)

Since this territory is not officially assigned a country code according ISO 3166 I used an unofficial three letter codes for them, see square brackets above.

Bugfix

Added flags of disputed autonomous territories:

Abkhazia [ABC] (on user request)
Artsakh [NKR] (on user request)
Puntland [SOP]
South Ossetia [SOS] (on user request)
Somaliland [SOL]
Transnistria [PMR]

Since those territories are not officially assigned country codes according ISO 3166 I used unofficial three letter codes for them, see square brackets above.

Added EU flags on user request.