COMETD-551 - org.cometd.oort.OortConfigServlet should extend javax.servlet.http.HttpServlet.

Fixed also other Servlets that did not extend HttpServlet.
COMETD-549 - Enable/Disable Jquery Global Ajax Events.

Added "global: false" to the jquery ajax calls.
Global events are not fired for cross-domain or JSONP requests, so
disabling them also for normal calls would make behavior consistent.
Also, if these events are used to show a wait cursor to the user,
this will not work because CometD long polls and therefore the cursor
will always be on.
Updated Dojo to 1.10.1 and Maven dependencies to newer versions.