Verify notes are formatted correctly on new docs website

When the documentation set was converted from docbook to markdown, callouts such as notes, warnings, tips, and best practices lost their special formatting. The pages on the current documentation website need to be compared with the PDFs from the old site to find the callouts that need to be reformatted.

Start with the Couchbase Server 2.2 manual (and use the 2.1 PDF as the basis for the comparison). The next one should be the Couchbase Developer Guide 2.2. After those, we can decide how far back to take it.

When doing the comparison, in the PDF, please use the annotation feature to mark the problem callouts. That will make it easier to find the places that will need to be changed in the 2.5 documentation.

Please fix the callouts by using the HTML markup for callouts.