Revert "Fixed a bug in TextBox; addText to a TextBox was treated 'withoutP'. This is not the expected behaviour"

This reverts commit ade740b.

Author: Bas-Jan 't Jong

src/PhpWord/Writer/Word2007/Element/TextBox.php

@@ -57,7 +57,9 @@ public function write()
         $margins = implode(', ', $tbxStyle->getInnerMargin());
         $this->xmlWriter->writeAttribute('inset', $margins);
         $this->xmlWriter->startElement('w:txbxContent');
+        $this->xmlWriter->startElement('w:p');
         $this->parentWriter->writeContainerElements($this->xmlWriter, $this->element);
+        $this->xmlWriter->endElement(); // w:p
         $this->xmlWriter->endElement(); // w:txbxContent
         $this->xmlWriter->endElement(); // v: textbox
         $styleWriter->writeW10Wrap();

src/PhpWord/Writer/Word2007/Part/AbstractPart.php

@@ -110,7 +110,7 @@ public function writeContainerElements(XMLWriter $xmlWriter, AbstractElement $co
 
         // Loop through elements
         $elements = $container->getElements();
-        $withoutP = in_array($containerName, array('TextRun', 'Footnote', 'Endnote')) ? true : false;
+        $withoutP = in_array($containerName, array('TextRun', 'Footnote', 'Endnote', 'TextBox')) ? true : false;
         if (count($elements) > 0) {
             foreach ($elements as $element) {
                 if ($element instanceof AbstractElement) {