Update Lift version

Update version

Update lift version

Fix "previously seen" check when handling AJAX/Comet session loss

AJAX and Comet requests should only invoke their session loss handler
the first two times a request is made for a given dead session ID.
However, the "previously seen" session ID / request counter map was
being updated for all requests, not just dead AJAX and Comet requests.
The result was that if the user had made more than two Lift-handled
requests in a given session (very likely), the session loss handler
would not be invoked. Instead a 404 error would be returned.

Change this to only update the "previously seen" map on dead AJAX and
Comet requests.

Publish to local Artifactory (CCAP)

Tag 3.0-ccap19-release

Release 3.0-ccap18

Prepare for 3.0-M3

Tag 3.0-ccap17-release

Prepare for 2.6