Remove unused file

This file is unused and has been last modified two years ago. Furthermore it won't evne work anymore properly because it uses things  like `CONFIG_DATEFORMAT` which are gone a long time ago...

in some case charset can be in lower case.

Do not overwrite the shareType so the post hook is still correct

Second parameter is optional

Makes my IDE happier.

Add strtoupper() in UTF-8 check to avoid error message

Add hint for troubleshooting MS Word previews

Revert "enabled disabled files app in repair step"

add readme for files external tests

add function to invalidate one opcache file, use it if possible #9885

Add SFTP public key authentication support

Setting default charset to UTF-8 in .htaccess and .user.ini

Cleanup of PHPDoc return types

Only update favorite icon if the operation was successful

check if cache files are readable

[master] Request requires a second parameter

Ignore minified js in translation process

NaturalSort performance improvements

prevent creation of ghost directories

Add a controller and reponse for ocs

Cache app versions

drop OC\Preferences

drop OC_Preferences

Respect `mod_unique_id` and refactor `OC_Request::getRequestId`

A combination of using isset() instead of count() or strlen(), caching the
chunkify function, and replacing is_numeric() with some comparisons

Add a better way to check if an avatar exists for the user

no fruitless count attempts, and notification should disappear

Check directory handle before we use it

Avoid dropdown to float under sidebar for mid narrow screens

Clean up files_external