add metada actions service

Conflicts:
	web-ui/src/main/resources/catalog/components/search/resultsview/ResultsviewDirective.js
add metadata actions translation

Conflicts:
	web-ui/src/main/resources/catalog/locales/en-search.json
	web-ui/src/main/resources/catalog/locales/fr-search.json
Add actions on selected metadata
Merge remote-tracking branch 'upstream/refactor_search' into refactor_search

Conflicts:
	web-ui/src/main/resources/catalog/components/search/searchmanager/partials/selection-widget.html
	web-ui/src/main/resources/catalog/locales/en-search.json
	web-ui/src/main/resources/catalog/locales/fr-search.json