use places/folder icon,
move link construction to JS,
only show icon on hover,
use 'searchresult' as css class name,
add filter/unfilter methods,
highlight searched files in current filelist
only filter when correct FileList is present

Fix Sharing "Expiration Date" on Oracle

refactor upload js & html to always use only js to fill form data

Add OCP\DB::getErrorMessage() to public namespace.

adding null check on a mount's storage

use lineheight instead of padding and height

Fixes #4465 - Added autoFocus to #shareWith autocomplete options

Use external and shared icons in OC.Dialogs.filepicker()

OC Avatars

Ajax calls for "files" and "files_trashbin" apps

Don't popup meaningless alerts when dialog called on page leave

Provide an implementation of the fileapi for oc6 build on top of the old api

- giving the user a new id for each test run in order to prevent reuse of e.g. permissions data in the database
- setting the current user id because \OC\FilesView relies on \OC_User::getUser()

Before this fix, the URL wasn't updated in IE8 when navigating into
folders.

This fix makes use of the hash part of URLs to make this work in IE8,
since IE8 doesn't support the history API nor changing the URL without
redirecting.

From now, both the regular query URL "?dir=somedir" and "#?dir=somedir"
will work in both IE8 and non-IE8 browsers.

In IE8, query based URLs are automatically converted to hash URLs upon
page load. The conversion is done on the server side by redirecting the
user to the updated URL.

When loading a page directly using a hash URL in the form
"#?dir=somedir" in IE8, the server doesn't get the hash, so it will not
return any results in that case and rely on ajax to load the first page.

Using delegate might break apps that embed themselves in the files
container. When an app embeds itself and the user clicks a breadcrumb,
it will simply reload the whole browser page.

The recent refactoring for the breadcrumb resizing relies on the "Files"
object which is in the "files" Javascript file.

This fix includes it here as well.

Frontend:
- The files app list now uses ajax calls to refresh the list.
- Added support the browser back button (history API).
- Added mask + spinner while loading file list

Backend:
- Added utility function in core JS for parsing query strings.
- Moved file list + breadcrumb template data code to helper
  functions
- Fixed some file paths in trashbin app to be similar to the files app

adding TB and GB to OC_Helper::humanFileSize

Always check variable type before using readdir to avoid surprises