Clarify PHP warning in admin settings

[MorrisJobke]

Fixes #22507

[MorrisJobke]

/backport to stable19

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 32929: failure

jsunit

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PhantomJS 2.1.1 (Linux 0.0.0) WARN: 'No OC found'
PhantomJS 2.1.1 (Linux 0.0.0) LOG: 'JQMIGRATE: Migrate is installed, version 1.4.1'
PhantomJS 2.1.1 (Linux 0.0.0) WARN: 'jQuery is deprecated: The global jQuery is deprecated. It will be updated to v3.x in Nextcloud 21. In later versions of Nextcloud it might be removed completely. Please ship your own.'
PhantomJS 2.1.1 (Linux 0.0.0) WARN: '$ is deprecated: The global jQuery is deprecated. It will be updated to v3.x in Nextcloud 21. In later versions of Nextcloud it might be removed completely. Please ship your own.'
PhantomJS 2.1.1 (Linux 0.0.0) WARN: 'Handlebars is deprecated: please ship your own, this will be removed in Nextcloud 20'
PhantomJS 2.1.1 (Linux 0.0.0) DEBUG: 'OCA.Files.Settings initialized'
PhantomJS 2.1.1 (Linux 0.0.0) DEBUG: 'OCA.Files.Sidebar initialized'
PhantomJS 2.1.1 (Linux 0.0.0) DEBUG: 'OCA.Sharing.ShareSearch initialized'
PhantomJS 2.1.1 (Linux 0.0.0) DEBUG: 'OCA.Sharing.ExternalLinkActions initialized'
PhantomJS 2.1.1 (Linux 0.0.0): Executed 847 of 850 (skipped 3) SUCCESS (14.608 secs / 14.029 secs)

acceptance-app-files-sharing

• tests/acceptance/features/app-files-sharing.feature:338

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  Scenario: sharee can revoke create permission from reshare after the sharer disabled it # /drone/src/tests/acceptance/features/app-files-sharing.feature:338
    Given I act as John                                                                   # ActorContext::iActAs()
    And I am logged in as the admin                                                       # LoginPageContext::iAmLoggedInAsTheAdmin()
    And I act as Jane                                                                     # ActorContext::iActAs()
    And I am logged in                                                                    # LoginPageContext::iAmLoggedIn()
    And I act as Jim                                                                      # ActorContext::iActAs()
    And I am logged in as "user1"                                                         # LoginPageContext::iAmLoggedInAs()
    And I act as John                                                                     # ActorContext::iActAs()
    And I create a new folder named "Shared folder"                                       # FileListContext::iCreateANewFolderNamed()
    And I see that the file list contains a file named "Shared folder"                    # FileListContext::iSeeThatTheFileListContainsAFileNamed()
    And I share "Shared folder" with "user0"                                              # FilesAppSharingContext::iShareWith()
    And I see that the file is shared with "user0"                                        # FilesAppSharingContext::iSeeThatTheFileIsSharedWith()
    And I act as Jane                                                                     # ActorContext::iActAs()
    And I open the Files app                                                              # FilesAppContext::iOpenTheFilesApp()
    And I share "Shared folder" with "user1"                                              # FilesAppSharingContext::iShareWith()
    And I see that the file is shared with "user1"                                        # FilesAppSharingContext::iSeeThatTheFileIsSharedWith()
    And I act as John                                                                     # ActorContext::iActAs()
    And I set the share with "user0" as not creatable                                     # FilesAppSharingContext::iSetTheShareWithAsNotCreatable()
    And I see that "user0" can not create in the share                                    # FilesAppSharingContext::iSeeThatCanNotCreateInTheShare()
    And I act as Jim                                                                      # ActorContext::iActAs()
    And I open the Files app                                                              # FilesAppContext::iOpenTheFilesApp()
    And I enter in the folder named "Shared folder"                                       # FileListContext::iEnterInTheFolderNamed()
    And I create a new folder named "Subfolder"                                           # FileListContext::iCreateANewFolderNamed()
    And I see that the file list contains a file named "Subfolder"                        # FileListContext::iSeeThatTheFileListContainsAFileNamed()
    When I act as Jane                                                                    # ActorContext::iActAs()
    And I open the Files app                                                              # FilesAppContext::iOpenTheFilesApp()
    And I open the details view for "Shared folder"                                       # FileListContext::iOpenTheDetailsViewFor()
    And I see that the details view is open                                               # FilesAppContext::iSeeThatTheDetailsViewIsOpen()
    And I open the "Sharing" tab in the details view                                      # FilesAppContext::iOpenTheTabInTheDetailsView()
    And I see that the "Sharing" tab in the details view is eventually loaded             # FilesAppContext::iSeeThatTheTabInTheDetailsViewIsEventuallyLoaded()
    And I set the share with "user1" as not creatable                                     # FilesAppSharingContext::iSetTheShareWithAsNotCreatable()
    Then I see that "user1" can not create in the share                                   # FilesAppSharingContext::iSeeThatCanNotCreateInTheShare()
    And I see that "user1" can not be allowed to create in the share                      # FilesAppSharingContext::iSeeThatCanNotBeAllowedToCreateInTheShare()
    And I act as Jim                                                                      # ActorContext::iActAs()
    And I open the Files app                                                              # FilesAppContext::iOpenTheFilesApp()
    And I enter in the folder named "Shared folder"                                       # FileListContext::iEnterInTheFolderNamed()
    And I see that it is not possible to create new files                                 # FileListContext::iSeeThatItIsNotPossibleToCreateNewFiles()
      Failed asserting that true is false.

acceptance-app-files-sharing-link

• tests/acceptance/features/app-files-sharing-link.feature:14

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  Scenario: hide download in a public shared link                   # /drone/src/tests/acceptance/features/app-files-sharing-link.feature:14
    Given I act as John                                             # ActorContext::iActAs()
    And I am logged in                                              # LoginPageContext::iAmLoggedIn()
    And I share the link for "welcome.txt"                          # FilesAppSharingContext::iShareTheLinkFor()
    And I set the download of the shared link as hidden             # FilesAppSharingContext::iSetTheDownloadOfTheSharedLinkAsHidden()
    And I write down the shared link                                # FilesAppSharingContext::iWriteDownTheSharedLink()
      Element is no longer attached to the DOM
      For documentation on this error, please visit: http://seleniumhq.org/exceptions/stale_element_reference.html
      Build info: version: '2.53.1', revision: 'a36b8b1', time: '2016-06-30 17:37:03'
      System info: host: 'e7cde483cf6f', ip: '192.168.208.2', os.name: 'Linux', os.arch: 'amd64', os.version: '4.15.0-76-generic', java.version: '1.8.0_91'
      Driver info: driver.version: unknown (WebDriver\Exception\StaleElementReference)
    When I act as Jane                                              # ActorContext::iActAs()
    And I visit the shared link I wrote down                        # PublicShareContext::iVisitTheSharedLinkIWroteDown()
    And I see that the current page is the shared link I wrote down # PublicShareContext::iSeeThatTheCurrentPageIsTheSharedLinkIWroteDown()
    Then I see that the download button is not shown                # PublicShareContext::iSeeThatTheDownloadButtonIsNotShown()
    And I see that the Share menu button is not shown               # PublicShareContext::iSeeThatTheShareMenuButtonIsNotShown()