- add missing license header
- Add security rule on currency BEFORE starting block indexation

- start implemntation of websocket server, to listenning changes

- Add new Synchro service, to get data from another ES cluster, through HTTP request

- Remove embedded Cesium (no more plugin site)
- refactoring on RestActions

 - Clean code to avoid duplication, in REST action
 - Settings: Add keyring properties
 - Allow message deletion by recipient

 - Implement rollback detection
 - ES service log now use simple prefix

- Add CORS enable (allow all origins)
- Allow java debugging, using Maven profile -Prun
- Fix categories data

- Add missing i18n
- Add REST action registry/record/_update
- Run blockchain synchronization at node startup
- Fix classpath issue for WebSocket

- Fix 'mvn -Prun' test
- Use ServiceLocator and beans resolution issue