From within a shared/public directory, when drilling down folders, some
users want to be able to download what they're currently looking at, not
the whole shared folder. The whole archive is always a click away anyway
since a user can click on the home button.

This fixes an issue when renaming files from a flat list view like
"Favorites" or "Shared with you", in which case the path needs to be
present in the response to make sure the data-path attribute is properly
set in the JS side.

To make it possible for the web UI to correctly display the tag/favorite
information after a rename, this information is now returned in the
rename response

Whenever tags are updated, they need to be updated in the file list's
file info array as well.

This commit also adds unit tests and makes sure that whichever tags are
sent back by the server after update are used when updating
attributes/fileinfo.

Make it possible to drop files below the table even if the table is
smaller than the window height.

Added a check to make sure upload is not triggered on invisible lists.

it seems we have forgotten to use named FileAction

otherwise translators cannot notice it on Transifex

We already use `.text()` here which automatically properly encodes the string. Thus the string will be double-encoded and look ugly. (i.e. when you search for ">" you will see "No results found for >")

Fixes itself.

Otherwise PHP errors are thrown in the error log.

Otherwise a fatal PHP error is thrown since the filesystem is not setup:
```
( ! ) Fatal error: Call to a member function getOwner() on null in /Users/lreschke/Programming/core/lib/private/files/filesystem.php on line 817
Call Stack
1	0.0004	247792	{main}( )	../index.php:0
2	0.0946	5088776	OC::handleRequest( )	../index.php:28
3	0.1423	7491280	OC\Route\Router->match( )	../base.php:748
4	0.1664	8592152	call_user_func:{/Users/lreschke/Programming/core/lib/private/route/router.php:250} ( )	../router.php:250
5	0.1664	8592216	__lambda_func( )	../router.php:250
6	0.1665	8599064	require_once( '/Users/lreschke/Programming/core/apps/files_versions/ajax/getVersions.php' )	../route.php(135) : runtime-created function:1
7	0.1801	9061096	OCA\Files_Versions\Storage::getUidAndFilename( )	../getVersions.php:7
8	0.1801	9061144	OC\Files\Filesystem::getOwner( )	../storage.php:45
```

Furthermore this adds the CSRF check as a nice-to-have addition, the requests accessing this are done via the jQuery AJAX methods and thus the header is automatically added to all requests already.

Otherwise when the file without any specified mimetype was accessed the error log was flooded with entries such as "Undefined index: mime", there can be multiple issues found about this in the forum and our bugtracker.

To test this access `/index.php/apps/files/ajax/mimeicon.php` with and without `$_GET['mime']`.

Fixes itself.

Whenever an external storage mount point is shared directly, its path is
empty which causes a leading slash to appear in the source path.

This fix removes the bogus leading slash in such situation.

This text is visible to admin users when they read the description of
the External Storage app.

"root" or "subfolder" -> "Remote subfolder" on selected storages

missed ftp...

* add disableEscape parameter to disable this functionality
* drop usage of escapeHTML() that is now done inside t()
* add unit test for escaped and not escaped placeholder
* proper JSDoc