Merge pull request #23 from libetl/master

Added feature last stable build time ago
[maven-release-plugin] prepare release jenkinswalldisplay-0.6.18
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release jenkinswalldisplay-0.6.19
[maven-release-plugin] prepare for next development iteration
JENKINS-19226
wall display the display cuts out ever few seconds and says "loading jobs"