WEB-7083 - Update PonyDocs skin to provide canonicalURI data variable for latest urls.
Revert "WEB-7083 - Update PonyDocs skin to provide canonicalURI data variable for latest urls."

This reverts commit 409c434515a837d1fc34d34c9785672f72045c2e.
WEB-7316 - Replace htmldoc execution with wkhtmltopdf with a utility cli program.
Merge branch 'release'
display 404 if pdfbook product isn't valid per WEB-7677
ponydocs - move info log to debug, add some more information to log message
Issue #WEB-7686 - Move INFO log to DEBUG in docs
ponydocs - use CACHE_DEBUG instead of SESSION_DEBUG
Issue #WEB-7686 - Move INFO log to DEBUG in docs
404 for bad product name per WEB-7505
remove ampersand to avoid pass by reference error per feedback on WEB-7677
Merge branch 'release'
Merge branch 'develop' into dev-WEB-7316
revert merge change unrelated to WEB-7316
recommit changes for WEB-7686 on its own branch
code convetion cleanup: fix long lines, whitespace per feedback on WEB-7316
make all anchor tags lower case to fix wkhtmltopdf case sensitivity bug per feedback on WEB-7316
remove repeated options from wkhtmltopdf command, init [3] to avoid php notices per feedback on WEB-7316
update install docs to reflect new html to pdf library WEB-7316
return 1 for error instead of -1; fix file path bugs WEB-7316
fix copyright override option in cli script WEB-7316
remove wkhtmltopdf from ponydocs repo; update documentation re: how to install WEB-7316