* \OC\OCSClient
* \OC\Preview
* \OC\PreviewManager
* \OC\Repair
* \OC\RepairException
* \OC\Search
* \OC\ServerContainer
* \OC\ServerNotAvailableException
* \OC\ServiceUnavailableException
* \OC\Setup
* \OC\Streamer
* \OC\SubAdmin
* \OC\SystemConfig
* \OC\TagManager
* \OC\Tags
* \OC\TempManager
* \OC\TemplateLayout
* \OC\URLGenerator
* \OC\Updater

This change will verify the signature of all apps with the level "Official" coming from the appstore or if they have been signed before.

This disables the app store for EE versions by default to address some problems caused by the wrong assumption that "Official" means supported by ownCloud Inc.

Administrators can still enable the app store by setting `appstoreenabled` to true in the config file.

* fixes #18154

In case an application gets disabled the level is set to "experimental" if it does not contain a `shipped` tag. This can for example be reproduced by installing the documents app from the appstore and then disabling it. Or cloning an app from git.

With this change the controller will now load the level of the application from the appstore if a valid OCSID has been provided.

Fixes https://github.com/owncloud/core/issues/17003

Allows administrators to disable or enabled experimental applications as well as show the trust level.

This reverts commit 6a1a4880.

Otherwise every time the AppStore was opened a lot of connections to the AppStore server were made which resulted in a terrible performance.

This changeset will cache the response for a sensible time so that only the first request will be somewhat slow.

Performance changes:
- Loading a category took previously more than 3 seconds on my machine. Now for every follow-up request it takes less than 200ms, resulting in a performance gain of 1950%
- Loading the category list took previously about 750ms - now it takes 154ms, a total performance gain of 395%

Otherwise the function is executed n times which is a lot of overhead

filter installed and not-installed apps properly

kill unneeded file

load category 'Installed' on page load

adding documentation links

new apps mgmt: first style adjustment

apps mgmt: only show license and preview if they exist

adding buttons

new apps mgmt: fix for mobile

use app icon if available

new apps mgmt: position enable/disable toggle to the right

new apps mgmt: proper display of icons or previews

new apps mgmt: fix loading spinner

reenable group selection for apps

new apps mgmt: position enable button normally again

new apps mgmt: clarify wording from 'Installed' to 'Enabled'

reintroduce enable/disable

Move rating image path generation to client-side

Move expression outside of l10n

fix group handling

add buttons for 'More apps' and 'Add your app' again

disable changed date of app for now

adding recommended label

style 'Recommended' app tag

fixing php warning

sort by rating

adding meta-category 'Recommended'

 Only show existing documentation links

lacy loading of screenshots

making group based app activation work again

adding support to get the app icon not only by the app name but also simply by the fixed name 'app.svg'

adding app.svg for all core apps

query string '?installed' is not longer needed

update and uninstall is back + error feedback

remove unneeded parameter

fix alignment of 'recommended' label

This can now be achieved by setting `appstoreenabled` to `false` in config.php

* test case added to avoid adding them later

Conflicts:
	lib/private/vcategories.php