Release cleanup.

…and app.yaml values for idle instances

Increase warmup activites

…, load some of the heavy stuff gradually over the first few calls to (hopefully light load) pages.

Multithread & Warmup

…ironment variable set to 'True'. Sitll operates on all other hosts.

Fix to ShortenOnSentence() which failed on comment sting over max length which did not end with '.'.  For completenes, added the missing '.' to definition of vehicleSeatingCapacity property.

Fix899

Make 404 page output valid html.

Fix to 404 page

The JSON-LD examples for ScholarlyArticle included unnecessary @value
clauses due to a naive conversion from the RDFa source. Remove them, so
instead of:

      "datePublished": {
        "@value": "2006-10",
        "@type": "xsd:gYearMonth"
      },

we'll have the much simpler, easier to publish and consume:

      "datePublished": "2006-10",

Fixes #904.

Signed-off-by: Dan Scott <dan@coffeecode.net>

Remove @value clauses from Periodical JSON-LD examples

… via master.

Added a section for sdo-deimos, currently empty.

UBY: releases.html: larger release font size

Includes multithread/shared memory/warmup tested live for months.
Merge remote-tracking branch 'origin/master' into align-deimos