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.

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.

Make sure last seen tooltip always appears even after searching and filt...

Added JS unit tests for ext storage

remove unused code

fix trash bin expire operation and add unit tests

Load fundamental apps, before any possible customizing app may follow

Added JS unit tests for the external storage file list extension.

Add server<->server sharing

Do not rename primary key index when renaming table

Obviously have to pass the hostname as is when there is no ':' in the hostname

Migrate table layout to p layout for share settings

Added unit test to make sure that checkMigrate() works when adding a
primary key and autoincrement column to a table schema.

When the migrator renames a table, for example for upgrade simulation,
it should not rename the primary key to avoid messing up with the diff
because the MySQL Doctrine code expects that index to always be called
"primary".

This reverts commit 73062040.

ref #8906