Mimetypes in the trashbin are wrong

[MorrisJobke]

• all mimetypes in the trashbin are of type application/octet-stream
• I guess this is because they end with .dUNIXTIMESTAMP

Any idea how to fix that? cc @schiessle @icewind1991 @rullzer

I found this while debugging another issue.

[MorrisJobke]

To check that just put a file with mimetype (e.g. text file) into the trashbin and check the response of the request to apps/files_trashbin/ajax/list.php:

{
    "data": {
        "directory": "/",
        "files": [
            {
                "etag": 1473409022000,
                "id": 0,
                "mimetype": "application/octet-stream",
                "mtime": 1473409022000,
                "name": "abc.def.txt",
                "parentId": null,
                "permissions": 1,
                "size": 3,
                "type": "file"
            },
            {
                "etag": 1473408408000,
                "id": 1,
                "mimetype": "application/octet-stream",
                "mtime": 1473408408000,
                "name": "test.docx",
                "parentId": null,
                "permissions": 1,
                "size": 0,
                "type": "file"
            }
        ],
        "permissions": 0
    },
    "status": "success"
}

[schiessle]

I remember that back then when I wrote the code I explicitly removed the .d4347364783 for the mime type detection. Seems that we lost it at some point in time again... I will have a look.

[schiessle]

Here we broke it... 435cd31

I will revert the line for the mimetype detection