Add storage->instanceOfStorage() to handle instanceof with storage wrappers

Sharing overview page

In some cases (like in the unit tests) "file_target" is not set yet
whenever the target file system hasn't been mounted yet.

OC.Share can be used in non-files apps, so the fileList callback needs
to support that as well.

- Fixed renaming and fileActionsReady event
- Added unit tests for shares list
- Fixed public page with defer
- Fixed file actions in sharing overview
- Fixed sharing counterpart list (10 entries max)
- Fixed file path attribute to be used in download action
- Fix sharing list headers
- OC.Share icons now operate on fileList instance
- Fix OC.Share.updateIcon when more than one list in DOM

Table headers should be 999 even when using links (introduced by the
sorting feature)

When selecting with checkboxes, they must appear black.

Sometimes no icon file is passed to replaceSVGIcon(), it showed an error
in IE8 and broke the code flow.

This fix adds a check whether the file name is set.

Legacy file actions are registered by legacy apps through
window.FileActions.register(). These actions can only be used by the
main file list ("all files") because legacy apps can only deal with a
single list / container.

New file actions of compatible apps must be registered through
OCA.Files.fileActions. These will be used for other lists like the
sharing overview.

Fixed versions and sharing actions to use OCA.Files.fileActions, which
makes them available in the sharing overview list.

- Removed file size from file summary in sharing overview
- Fixed document title
- Fixed empty content text for shared overview

Added "dir" in file actions handler context so that handlers can know
what the path of the file was without having to look it up from the file
list.

Fixed versions app to use the context.dir instead of the old $('#dir')
element. This makes the versions popup work in the sharing overview.

FileActions can now be clone to be use for separate file list views
without having the side-effect of affecting the main file list view.

Added "Open" action in sharing overview file lists to redirect to the
regular file list when clicking on a folder.

A context hash is now passed to file action handlers which makes it
possible to have file list specific file actions.

- added sharing overview entries in the sidebar
- use OCS Share API to get the list of files

Design detail fixes

fix 8757, get rid of service locator antipattern

show delete hint text on hovering trash

Added update overview page

get mount point from mount manager

Remove deprecated functions

This functions have been deprecated since Oct 2012 (ownCloud 5), let's finally remove them for ownCloud 7.

Ref https://github.com/owncloud/core/commit/c4b8bb10411a4d601b7f4c8758980005f14850ab

Add a resetadminpass command to console

* owncloud/add_resetadminpass_command:
  Move resetpassword into user: command space.
  Document type of user project.
  Receive \OC\User\Manager as a constructor dependency.
  Use userManager, color output, return 1 on error
  Add doc, check return-value, fix spacing, require interactive
  Back to the future
  Make ResetAdminPass to ResetPassword
  Add a resetadminpass command to console - fix #8248

Recursive copy and remove for local storage backends