changed color theme to be black and added the ability to enter the amount in the recipient’s currency

frontend/pshared/lib/models/resources.dart

@@ -73,7 +73,7 @@ enum ResourceType {
   @JsonValue('ledger_parties')
   ledgerParties,
 
-  @JsonValue('ledger_posing_lines')
+  @JsonValue('ledger_posting_lines')
   ledgerPostingLines,
 
   @JsonValue('payments')
@@ -113,4 +113,8 @@ enum ResourceType {
   /// Represents steps in workflows or processes
   @JsonValue('steps')
   steps,
+
+  /// Fallback for unknown values returned by backend.
+  @JsonValue('unknown')
+  unknown,
 }