[QA] [IE11] File download spinner never stops and buttons are greyed out

[jnweiger]

Tested on ACL Version: 0.2.4-9f30f67f (1571148612982)

• User creates a folder, uploads a file into the folder
• User clicks the download button

THEN a spinner next to the filename starts, and all buttons become greyed out.

User either completes or cancels the download. In both cases:
The spinner continues, the buttons remain grayed out.

Expected behaviour: The spinner disapperars after downloading, and the buttons become active again.

[jnweiger]

In Firefox, the grayout and spinner also exist. But only briefly, during the actual download. GOOD.

[DeepDiver1975]

In Firefox, the grayout and spinner also exist. But only briefly, during the actual download. GOOD.

IE uses a different code path then other browsers - so this is expected

[jnweiger]

Retested on INT Version: 0.2.4-11a16847 (1571997410356)

Fixed. Thanks!