[enh] Move ElasticSearch plugins into external project (cesium-plus-pod)

...arch/subscription/util/stringtemplate/StringRenderer.java

duniter4j-es-subscription/src/main/misc/index.sh

...resources/i18n/duniter4j-es-subscription_en_GB.properties

...resources/i18n/duniter4j-es-subscription_fr_FR.properties

...niter/elasticsearch/subscription/templates/cesium_logo.st

...s/org/duniter/elasticsearch/subscription/templates/css.st

.../duniter/elasticsearch/subscription/templates/css_logo.st

...uniter/elasticsearch/subscription/templates/event_item.st

.../org/duniter/elasticsearch/subscription/templates/html.st

...lasticsearch/subscription/templates/html_email_content.st

...r/elasticsearch/subscription/templates/html_event_item.st

.../org/duniter/elasticsearch/subscription/templates/i18n.st

...duniter/elasticsearch/subscription/templates/i18n_args.st

...uniter/elasticsearch/subscription/templates/text_email.st

...r/elasticsearch/subscription/templates/text_event_item.st

...es-subscription/src/main/resources/plugin-security.policy

...c/main/resources/subscription-categories-bulk-insert.json

...es-subscription/src/test/es-home/config/elasticsearch.yml

...ter4j-es-subscription/src/test/es-home/config/logging.yml

...e/plugins/mapper-attachments/plugin-descriptor.properties