Creating new files, folders or uploading files now have their sharing
icon updated accordingly.

For this, the global share status list that is cached in
OC.Share.statuses is reused for new files.

Performance should improve as the sharing list is now only loaded once
per navigation session.

In OC.Share, split loadIcons into loadIcons + updateIcons.

Fixes #4977

Fixes #5370

Fixes #5351

Ajax loading is not supported yet for public files view.
This fix disabled the history API, ajax loading and ajax directory
switch in public mode until it is implemented properly.

Fixes #5328

There was an issue where only Chrome allows setting position: relative
on a td element.

This fix now works in IE8, Firefox and Chrome.

Fixes #5056

The file actions must explicitly be updated by calling
FileActions.display() on the file element after creating or uploading a
file.

Fixes #4971 and #4993

Removed display: block to let the element be displayed inline and let
itself aligned by vertical-align: middle of the parent

This works in IE8 and other browsers.

Fixes #5288

Removed old inline CSS that forced every td to have position:static in
the files app. (#5056)

- Fixed JS error that prevent the conflict dialog to open #5060
- Fixed JS error that prevented the overwrite case to run

Fixes #5256

A missing closing span broken the container in IE8 which prevented the
file actions to be appended properly.

Since the files app can be reached under multiple URLs, either root,
files.php or public.php, a flag has been added to the DOM to help apps
(like file viewers) to detect whether they are currently in the files
app.

Now correctly reinitializing the breadcrumb drop zone after ajax
navigation.

This also fixes dropping onto the "files" app icon.

Some apps like the files_trashbin app do not set a directory on its
"home" breadcrumb link.

This fix makes sure that the click event doesn't do anything in that
case and lets the browser open the link.

This fixes the "home" icon in the trashbin app which now correctly
reopens the files app.

The message for invalid private key was too long and didn't fit in the
notification box. This fix reduces the message to fit properly by
removing the extra information.

we don't know \OCA\Encryption\Session if the encryption app is not enabled, so we have to set the status manually