Localize folder names

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

@@ -215,7 +215,7 @@ public class EntityFolder implements Serializable {
 
     @Override
     public String toString() {
-        return name;
+        return (display == null ? name : display);
     }
 
     public JSONObject toJSON() throws JSONException {

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

@@ -637,6 +637,10 @@ public class FragmentAccount extends FragmentBase {
                     if (!junk && altJunk != null)
                         altJunk.type = EntityFolder.JUNK;
 
+                    for (EntityFolder folder : result.folders)
+                        folder.display = folder.getDisplayName(getContext());
+                    EntityFolder.sort(getContext(), result.folders);
+
                 } finally {
                     if (istore != null)
                         istore.close();
@@ -1109,7 +1113,17 @@ public class FragmentAccount extends FragmentBase {
                     @Override
                     protected List<EntityFolder> onExecute(Context context, Bundle args) {
                         long account = args.getLong("account");
-                        return DB.getInstance(context).folder().getFolders(account);
+
+                        DB db = DB.getInstance(context);
+                        List<EntityFolder> folders = db.folder().getFolders(account);
+
+                        if (folders != null) {
+                            for (EntityFolder folder : folders)
+                                folder.display = folder.getDisplayName(getContext());
+                            EntityFolder.sort(getContext(), folders);
+                        }
+
+                        return folders;
                     }
 
                     @Override
@@ -1302,8 +1316,6 @@ public class FragmentAccount extends FragmentBase {
     }
 
     private void setFolders(List<EntityFolder> folders) {
-        EntityFolder.sort(getContext(), folders);
-
         EntityFolder none = new EntityFolder();
         none.name = "-";
         folders.add(0, none);

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

@@ -957,7 +957,11 @@ public class FragmentIdentity extends FragmentBase {
                 result.identity = db.identity().getIdentity(iid);
                 result.folders = db.folder().getFolders(aid);
 
-                EntityFolder.sort(context, result.folders);
+                if (result.folders != null) {
+                    for (EntityFolder folder : result.folders)
+                        folder.display = folder.getDisplayName(context);
+                    EntityFolder.sort(context, result.folders);
+                }
 
                 return result;
             }

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

@@ -178,7 +178,17 @@ public class FragmentRule extends FragmentBase {
             @Override
             protected List<EntityFolder> onExecute(Context context, Bundle args) {
                 long account = args.getLong("account");
-                return DB.getInstance(context).folder().getFolders(account);
+
+                DB db = DB.getInstance(context);
+                List<EntityFolder> folders = db.folder().getFolders(account);
+
+                if (folders != null) {
+                    for (EntityFolder folder : folders)
+                        folder.display = folder.getDisplayName(context);
+                    EntityFolder.sort(context, folders);
+                }
+
+                return folders;
             }
 
             @Override