Unsupported files download feature

[Nekaravaev]

Solution for #8

Checking by mimetypes.

[xy2z]

Hi @Nekaravaev, good work. I just have som minor changes before i can merge this:

PHP

• Please change indentation to use tabs only (both php and js)
• It's php7+ only so in index.php:24+:25 you can just do $param_action = $_GET['action'] ?? null;
• My SVG files doesn't work now (their mimetype is 'svg+xml')
• PineDocsFile.php:55 you should replace $mime_type_array with $this->mimetype so the variable name is consistent.

JS

• You've added a console.log() in the js file
• The download href shouldn't start with "/" in case the site is in a subdir (like localhost/PineDocs/)

[xy2z]

thanks @Nekaravaev