- Footer reference was inside TOC field.
   - m_bStartTOC flag was enabled while handling TOC from document.
   - Since m_bStartTOC was enabled while importing footer it was inserting extra textcursors entries
     to m_aTextAppendStack.
   - Due to bad entries in textappendstack, footer was not popped properly.
   - Because of this all lost data after sixth page was inserted into footer node and it was not
     visible on page.
   - Added new flag to differentiate TOC from main document and Header or Footer.

Conflicts:
	sw/qa/extras/ooxmlexport/ooxmlexport.cxx
Reviewed on:
	https://gerrit.libreoffice.org/9930

Change-Id: I5288f5c313c890e0fdddf3c60c4609eab30edde6