storage:fs Attachments on the filesystem

[bkjproductions]

If you happen to back up your Attachments folder to a Windows computer, the names for the folders are both upper and lower case. That is, this plugin creates subfolders a-z and A-Z, both upper and lowercase folder names, based on the file names created by the storage system. So when you go to copy your Attachments to a Windows computer, the lowercase "a" folder is merged with the uppercase "A" folder.

I tried to fix this by addding strtoupper() around line 69 of storage.php:
$prefix = strtoupper($prefix);
but that generates an error somewhere else when the file is saved (though it is saved into an uppercase-named folder).

As a workaround I am attempting to modify include/class/misc.php around line 19 to give it only uppercase letters:

	function randCode($len=8, $chars=false) {
       // was $chars = $chars ?: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_=';
        $chars = $chars ?: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_=';

but I don't think that really works.

It would also be great if the files were not named randomly and could keep their extensions, though that is probably a security feature?

[vollkommenIrrelevant]

Can please somebody have a look at this? This bug should be fixed!
More Information here: #212