Drop drafts folder requirement

app/src/main/java/eu/faircode/email/FragmentAccount.java

@@ -807,8 +807,6 @@ public class FragmentAccount extends FragmentBase {
                     throw new IllegalArgumentException(context.getString(R.string.title_no_password));
                 if (TextUtils.isEmpty(interval))
                     interval = "19";
-                if (synchronize && drafts == null)
-                    throw new IllegalArgumentException(context.getString(R.string.title_no_drafts));
 
                 if (TextUtils.isEmpty(realm))
                     realm = null;

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

@@ -541,6 +541,16 @@
             app:layout_constraintStart_toEndOf="@id/barrier_folders"
             app:layout_constraintTop_toBottomOf="@id/tvIdle" />
 
+        <TextView
+            android:id="@+id/tvDraftsRemark"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/title_drafts_required"
+            android:textAppearance="@style/TextAppearance.AppCompat.Small"
+            android:textStyle="italic"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/spDrafts" />
+
         <Spinner
             android:id="@+id/spSent"
             android:layout_width="0dp"
@@ -549,7 +559,7 @@
             android:layout_marginTop="12dp"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toEndOf="@id/barrier_folders"
-            app:layout_constraintTop_toBottomOf="@id/spDrafts" />
+            app:layout_constraintTop_toBottomOf="@id/tvDraftsRemark" />
 
         <Spinner
             android:id="@+id/spAll"
@@ -679,6 +689,6 @@
             android:id="@+id/grpFolders"
             android:layout_width="0dp"
             android:layout_height="0dp"
-            app:constraint_referenced_ids="tvDrafts,spDrafts,tvSent,spSent,tvAll,spAll,tvTrash,spTrash,tvJunk,spJunk,vSeparatorSwipe,tvLeft,spLeft,tvRight,spRight" />
+            app:constraint_referenced_ids="tvDrafts,spDrafts,tvDraftsRemark,tvSent,spSent,tvAll,spAll,tvTrash,spTrash,tvJunk,spJunk,vSeparatorSwipe,tvLeft,spLeft,tvRight,spRight" />
     </androidx.constraintlayout.widget.ConstraintLayout>
 </ScrollView>

app/src/main/res/values/strings.xml

@@ -232,10 +232,10 @@
     <string name="title_no_user">User name missing</string>
     <string name="title_no_password">Password missing</string>
     <string name="title_no_inbox">Inbox not found</string>
-    <string name="title_no_drafts">No drafts folder selected</string>
     <string name="title_no_primary_drafts">No primary account or no drafts folder</string>
     <string name="title_no_idle">This provider does not support push messages. This will delay reception of new messages and increase battery usage.</string>
     <string name="title_no_sync">Synchronization errors since %1$s</string>
+    <string name="title_drafts_required">A drafts folder is required to send messages</string>
     <string name="title_account_delete">Delete this account permanently?</string>
     <string name="title_identity_delete">Delete this identity permanently?</string>
     <string name="title_pop">POP is not supported</string>