GUAC-1469 Fix date placeholder format
GUAC-1469 Fix date placeholder format

Format still needs to be the same form as the original YYYY-MM-DD but using French abbreviations for this pattern.

softpymesJeffer/incubator-guacamole-client,necouchman/incubator-guacamole-client,glyptodon/guacamole-client,nkoterba/guacamole-common-js,necouchman/incubator-guacamole-client,flangelo/guacamole-client,jmuehlner/incubator-guacamole-client,lato333/guacamole-client,lato333/guacamole-client,mike-jumper/incubator-guacamole-client,jmuehlner/incubator-guacamole-client,DaanWillemsen/guacamole-client,flangelo/guacamole-client,softpymesJeffer/incubator-guacamole-client,hguehl/incubator-guacamole-client,softpymesJeffer/incubator-guacamole-client,jmuehlner/incubator-guacamole-client,flangelo/guacamole-client,necouchman/incubator-guacamole-client,hguehl/incubator-guacamole-client,lato333/guacamole-client,glyptodon/guacamole-client,DaanWillemsen/guacamole-client,glyptodon/guacamole-client,softpymesJeffer/incubator-guacamole-client,hguehl/incubator-guacamole-client,jmuehlner/incubator-guacamole-client,DaanWillemsen/guacamole-client,esmailpour-hosein/incubator-guacamole-client,mike-jumper/incubator-guacamole-client,mike-jumper/incubator-guacamole-client,necouchman/incubator-guacamole-client,glyptodon/guacamole-client,hguehl/incubator-guacamole-client,mike-jumper/incubator-guacamole-client,glyptodon/guacamole-client,lato333/guacamole-client