configs: rename dirs to match live koopa containers

Reflect host naming in git paths:
- configs/taler-hacktivism/ (was taler-merchant) → container taler-hacktivism
- configs/taler-hacktivism-bank/ (was taler-bank) → container …-bank,
  image taler-hacktivism-banking:live
- configs/taler-exchange-ansible/ already matches …-exchange-ansible
- configs/taler-exchange/ = conf inside that exchange container

Update LIVE.md, README, ports/refs. No secret values.

configs/taler-bank/bank-overrides.conf

@@ -1,39 +0,0 @@
-# Regional GOA bank — no IBAN / Nexus / fiat conversion.
-# Container: /etc/libeufin/bank-overrides.conf
-# Inlined last from /etc/libeufin/libeufin-bank.conf via @inline@ bank-overrides.conf
-
-[libeufin-bank]
-CURRENCY = GOA
-WIRE_TYPE = x-taler-bank
-BASE_URL = https://bank.hacktivism.ch/
-NAME = "GOA Exploration Bank"
-SERVE = tcp
-PORT = 9012
-BIND_TO = 0.0.0.0
-DEFAULT_DEBT_LIMIT = GOA:100000
-ALLOW_REGISTRATION = yes
-ALLOW_CONVERSION = no
-REGISTRATION_BONUS = GOA:0
-WIRE_TRANSFER_FEES = GOA:0
-DEFAULT_EXCHANGE = https://exchange.hacktivism.ch/
-
-[currency-goa]
-ENABLED = YES
-name = "GOA exploration currency"
-code = GOA
-fractional_input_digits = 8
-fractional_normal_digits = 0
-fractional_trailing_zero_digits = 0
-alt_unit_names_are_symbols = NO
-alt_unit_names = {"24":"Yotta-GOA","21":"Zetta-GOA","18":"Exa-GOA","15":"Peta-GOA","12":"Tera-GOA","9":"Giga-GOA","6":"Mega-GOA","3":"Kilo-GOA","0":"GOA","-1":"Deci-GOA","-2":"Centi-GOA","-3":"Milli-GOA","-6":"Micro-GOA","-7":"Deci-Micro-GOA","-8":"Atomic-GOA"}
-
-[currency-kudos]
-ENABLED = NO
-[currency-testkudos]
-ENABLED = NO
-[currency-euro]
-ENABLED = NO
-[currency-swiss-francs]
-ENABLED = NO
-[currency-netzbon]
-ENABLED = NO