Fix for timeouts in the GitLab ECA rb pre-recieve script

Fixed LoadingCache in projects service to fetch projects async instead of blocking. Updated RB script with extra error checking. Incremented Quarkus version to stable 1.3.1.Final from 1.3.0.Final. Added catch-all runtime exception response mapper to stop HTML response on error pages.

Signed-off-by: Martin Lowe martin.lowe@eclipse-foundation.org