Fix Excel5 category

Update Excel5.php to remove hard-coded "Test result file" category
Merge pull request #159 from sparksp/patch-1

Fix Excel5 category
General: Modify cell's getCalculatedValue() method to return the content of RichText objects rather than the RichText object itself
Bugfix: (alexgann) Work item GH-154 - Fix merged-cell borders on HTML/PDF output
Remove empty row from empty charts and images
Close tbody after images and charts
Merge pull request #166 from neclimdul/extra_html_writer_row

Fix Extra Table Row From Images and Charts - Thanks
Bugfix: (Shanto) Work item GH-161 - Fix: Hyperlinks break when removing rows
Additional work on bugfix GH-161: Hyperlinks break when removing rows
Additional work on GH-161 - Fix: Hyperlinks break when removing rows
Update examples
Additional work on GH-161 for Breaks
Some refactoring of insert/delete row/column reference methods
PHPDoc blocks
Added Docblocks for cell address and column sort callback functions
Minor performance tweaks
Modified some of the examples to show rich text and additional download headers that might be needed
Merge branch 'develop' of https://github.com/PHPOffice/PHPExcel into develop
Docblock modifications
Docblock comments