Update meta data documentation and add the tsd.core.meta.enable_tsuid_tracking
configuration parameter for really busy TSDs

Signed-off-by: Chris Larsen <clarsen@euphoriaaudio.com>
Add documentation for /api/query/last
Add more Query examples and link to the page
Move JSON serializer examples into /api/put and /api/query where they'll be of more use
Move /api_http/query to /api_http/query/index as we now have multiple pages under /query

Signed-off-by: Chris Larsen <clarsen@euphoriaaudio.com>