Resolves #1192

`/lib/plugins/<plugin>/deleted.files`
which list files that can be removed e.g.
```
# This is a list of files that were present in previous plugin releases
# but were removed later. An up to date plugin should not have any of
# the files installed
action.php
folder/file.txt
```

adds aria handling to makeToggle and allows to supress it in dw_toggle

The pragma header is only defined for requests not for responses. The
Cache-Control header should be used in responses.

Translation update (ja)

adjust newline in intro.txt at config

Changed all input buttons to button buttons

Translation update (ja)

Translation update (ko)

No SMB links Fx note

Improves syntax page due to feedback at #1233

Translation fixes

Translation update (es)

Translation update (zh)

Update lang.php

Выравнивание и разбиение по образцу en/lang.php, унификация "директорий" и "папок", "расширений" и "дополнений"

Extension manager fixes

Translation update (de-informal)

Wiki syntax page and minor

IXR_Date