Fixes questions marked as incorrect, improves result view

core/src/main/java/ch/gtache/fro/practice/impl/PracticeRunnerImpl.java

@@ -41,7 +41,7 @@ public class PracticeRunnerImpl implements PracticeRunner {
         if (run.currentQuestionIndex() < run.parameters().questionsNumber()) {
             final var question = questionGenerator.generate(run.parameters());
             final var currentQuestion = run.currentQuestion();
-            if (currentQuestion.bird() == answer) {
+            if (currentQuestion.bird().equals(answer)) {
                 final var newCorrectQuestions = new ArrayList<>(run.correctQuestions());
                 newCorrectQuestions.add(currentQuestion);
                 return new PracticeRunImpl(run.parameters(), run.currentQuestionIndex() + 1, question, newCorrectQuestions, run.failedQuestions());