[TYPO3-core] RFC #13942: Hiding Option Checkboxes and search fields on "empty" list view does not work

[Sebastian Michaelsen]

This is an SVN patch request.

Type: Bugfix

Bugtracker references:
http://bugs.typo3.org/view.php?id=13942

Branches:
trunk

Problem:
When you open a page in list view which has no records to display, it still shows up Checkboxes for 
"Extended View" and "Localization view" and a search form.
A check to hide these is implemented but does not work anymore.
The check for $dblist->HTMLcode is not reliable, because $dblist produced always HTML-Output even if 
there are no tables to render.

Solution:
Use $dblist->counter instead to determine if there were any tables rendered.

Notes:
I had to move the Clipboard stuff outside the if-Condition. The Clipboard should also be displayed 
on empty pages so that it can be used to paste records.

How to test:
* View an empty page (no records of any table on it) in the list view and see that checkboxes and 
the search are there
* Apply the patch
* Now only the clipboard should be left

Kind regards,
Sebastian
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