Update the modified date in UI on file reversion

fix recursion on rmdirr

Fix blurring of invalid file name on rename

Only cache enabled apps when logged in

Fix moving files into read only public shares

When renaming to an existing file name, blurring the field should not
remove it.

This fix keeps the field until escape is pressed instead of replacing it
with a broken empty space.

[master] Use actual file path on rename/delete

Prevent loadApps on upgrade

Clear file selection when list is repopulated

Setup the external share manager in a hook

When calling FileList.setFiles() the current selection needs to be
cleared.

To make sure the external shares are initialized in the right order and
make sure the session is correctly initialized before, the external
share manager is now set up in a filesystem setup hook.

Add explanation about the current implementation of updateApp

Fixed file actions fallback

Prevent showing the file picker twice

Fixed controls bar in viewer mode

Conflicts:
	apps/user_ldap/lib/access.php

Fix many issues with drag and drop upload

In case the filepicker function is called twice, only show it once.

Some apps are calling FileActions.display() directly but omit the new
fileList argument.

This fix makes the fileList argument correctly fall back to the default
file list (the one from the "All files" section)

When uploading files or folders, they only need to be appended or
updated when their path or a section of their path is inside the current
directory (which happens for folder upload)

Fixes issue where file was appended when dragging on a parent directory
onto the breadcrumb.

Fixes appending issue when uploading folders.