Also making sure that every BaseModel implements onString to be
displayable by a Selector.
And adding the new search-value-selector in the motion-detail-view
- uses ngx-translate
- extracts all strings marked with " XXX | translate " or <X translate>
using ngx-translate-extract (npm run extract)
- custom translation loader prevents empty strings
- default language is english
- will try to use the browsers language, will fallback to english
- functional language switching menu
- not compatible with current PO files
- current JSON-translation can be re-used
