feat: only refetch t&c on config change

package.json

@@ -27,10 +27,8 @@
     "ethereumjs-util": "^5.2.0",
     "ethereumjs-wallet": "^0.6.0",
     "express": "^4.15.4",
-    "express-bandwidth": "0.0.1",
     "express-limiter": "^1.6.0",
     "express-rate-limit": "^2.9.0",
-    "express-transform": "^1.0.1",
     "express-ws": "^3.0.0",
     "futoin-hkdf": "^1.0.2",
     "got": "^7.1.0",
@@ -63,7 +61,6 @@
     "socket.io": "^2.0.3",
     "socket.io-client": "^2.0.3",
     "talisman": "^0.20.0",
-    "transfer-rate": "^2.2.0",
     "twilio": "^3.6.1",
     "uuid": "^3.1.0",
     "web3": "^0.20.6",