fpspreadsheet: Implement text alignment, text rotation and word wrap for xlsx reader. Extend these unit tests for xlsx - passed. Some improvements in formattests (better readability of enum data, trying to guarantee deletion of temp file in case of a mismatch).

git-svn-id: http://svn.code.sf.net/p/lazarus-ccr/svn@3407 8e941d3f-bd1b-0410-a28a-d453659cc2b4