this way the owner sees all mounted public links and control them individually

Update public.js

Update public.js

When no files were specified for download, it means folder download.
In this case, no need to pass an empty "files" argument.

Fixes issues with browsers not happy with the token.
Fixes activities which were not sent.

This is for apps that use getDownloadUrl() to access the Webdav endpoint
for example for streaming.
Also happens when clicking on the download action of a file.

Note that the regular visible download URL is still the same.

The public page now uses the public.php/webdav endpoint.

Also enabled more file operations like rename, move, delete and create
folder from the public page, which are now all possible thanks to the
public.php/webdav endpoint.

When being on a link share and clicking "Add to your ownCloud" a double slash might be inserted in the URL if the entered ownCloud host ended with a slash. Results in a server error.

Fixes #19382

* fixes #16913
* fixes issues in IE8 where the thumbnail is too big

Fixes #18203

We need to set the size of the preview using the devicePixelRatio and use that as arguments when using the preview endpoint or that endpoint will use the default 36x36 and thumbnails will be blurry on high DPI devices

Fix regressions introduced in a672e9d5 regarding the image height calculation

IE 9 and below do not provide window.btoa and there is currently no way
to generate base64 strings without introducting further dependencies.

So for now the solution is to fall back to the ugly picture mode for
text files whenever IE <= 9 is used.

`params` in the `OC.generateUrl` function call only replaces all specified occurences of a key just like the l10n PHP functionality does.

This means that to build a query string we have to use `OC.buildQueryString` instead of the params parameters.

Fixes https://github.com/owncloud/core/issues/16336 which is a regression introduced with https://github.com/owncloud/core/commit/58a87d0babcb91aab75b45e630d2fc2fee15691e of https://github.com/owncloud/core/pull/15652.

Without this fix downloading single files from a public shared folder is not possible.

+ add ellipsis
+ fix OC.generateUrl calls