Fixed updater to use ZMQ for update handling instead of class loading

jams-launcher/pom.xml

jams-launcher/src/main/java/launcher/AppStarter.java

...launcher/src/main/java/launcher/loaders/ServerLoader.java

...auncher/src/main/java/launcher/loaders/UpdaterLoader.java

...-launcher/src/main/java/launcher/zmq/MessageReceiver.java

jams-server/pom.xml

jams-server/src/main/java/net/jami/jams/server/Server.java

...server/servlets/api/admin/update/SubscriptionServlet.java

.../jams/server/servlets/api/admin/update/UpdateServlet.java

...rc/main/java/net/jami/jams/server/update/JAMSUpdater.java

...ain/java/net/jami/jams/server/update/UpdateCheckTask.java

...in/java/net/jami/jams/server/update/UpdateDownloader.java

...ain/java/net/jami/jams/server/update/UpdateInterface.java

jams-server/src/main/resources/oem/config.json

jams-server/src/main/resources/webapp/js/api.js

jams-server/src/main/resources/webapp/js/config.js

pom.xml

updater/pom.xml

updater/src/main/resources/oem/ca.crt