Update the onboarding process to support crunchyroll

* only save credentials during onboarding, if login was successful
* show onboarding, if login failed

app/src/main/res/layout/fragment_on_login.xml

@@ -65,6 +65,7 @@
             android:layout_margin="7dp"
             android:ems="10"
             android:hint="@string/password"
+            android:imeOptions="actionDone"
             android:importantForAutofill="no"
             android:inputType="textPassword" />
 

app/src/main/res/layout/fragment_on_welcome.xml

@@ -38,7 +38,7 @@
                 android:id="@+id/text_app_name"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:text="@string/app_name"
+                android:text="@string/on_welcome_heading"
                 android:textAlignment="center"
                 android:textSize="26sp"
                 android:textStyle="bold" />