Formatting. Multilingual rules.
Merge remote-tracking branch 'origin/refactor_editorui' into refactor_editorui

Conflicts:
	web-ui/src/main/resources/catalog/style/gn_editor.less
Display the defaultTitle if the document returned does not contain title.
Editor / Add multilingual editing (See https://github.com/geonetwork/core-geonetwork/wiki/Refactoring-editor#editor-widgets).
Formatting.