Fix link rewrite in topic merge
Fix ODT image processing
Fix PDF image processing with corrected topic merge
Adjust output directory by uplevels

Adjusting the output directory by up levels will allow e.g. PDF and RTF
to generate output into the base output directory.
Fix link source bug

Use href variable in template body, not href attribute directly.
Add path2project unit test
Use File in path2project PI generation #1544
Fix path2project PI in copy-to topic #1563
Fix site documentation build