[maven-release-plugin] prepare release geomajas-dist-1.12.28
[maven-release-plugin] prepare release geomajas-dist-1.12.28

geomajas/geomajas-project-client-gwt,geomajas/geomajas-project-server,geomajas/geomajas-project-server,geomajas/geomajas-project-server,geomajas/geomajas-project-client-gwt2,geomajas/geomajas-project-client-gwt2,geomajas/geomajas-project-client-gwt,geomajas/geomajas-project-client-gwt