Basic accounts

- add account link in welcome.html
- add AuthorizeExchangeSpec adminPaths in SecurityConfiguration
- add AccountController
- add users.html
- add getAccounts in AccountRegistryService
- add WebClient accountRegistryAccounts in webClient

src/main/kotlin/ltd/hlaeja/util/WebClientCalls.kt

@@ -1,5 +1,6 @@
 package ltd.hlaeja.util
 
+import ltd.hlaeja.library.accountRegistry.Account
 import ltd.hlaeja.library.accountRegistry.Authentication
 import ltd.hlaeja.property.AccountRegistryProperty
 import org.springframework.http.HttpStatus.LOCKED
@@ -9,6 +10,7 @@ import org.springframework.security.authentication.BadCredentialsException
 import org.springframework.security.authentication.LockedException
 import org.springframework.security.core.userdetails.UsernameNotFoundException
 import org.springframework.web.reactive.function.client.WebClient
+import reactor.core.publisher.Flux
 import reactor.core.publisher.Mono
 
 fun WebClient.accountRegistryAuthenticate(
@@ -22,3 +24,12 @@ fun WebClient.accountRegistryAuthenticate(
     .onStatus(UNAUTHORIZED::equals) { throw BadCredentialsException("Invalid credentials") }
     .onStatus(NOT_FOUND::equals) { throw UsernameNotFoundException("User not found") }
     .bodyToMono(Authentication.Response::class.java)
+
+fun WebClient.accountRegistryAccounts(
+    page: Int,
+    size: Int,
+    property: AccountRegistryProperty
+): Flux<Account.Response> = get()
+    .uri("${property.url}/accounts?page=$page&size=$size".also(::logCall))
+    .retrieve()
+    .bodyToFlux(Account.Response::class.java)