As an editor I want to see which references exist for the statement I'm about to edit in order to judge if I need to update or remove them.
**Mockups:**
{F30407566}
**BDD**
GIVEN a statement with a reference
WHEN editing it in the Data Bridge
THEN I see a references section with the reference
**Acceptance criteria:**
[ ] all references of the statement are listed below the value in a references section
[ ] all snaks of a reference are concatenated with TBD
[ ] snaks are displayed in the order they come from Wikidata (i.e. according to the snak-order)
[ ] in case of 0 references title and button are not visible
**Notes**
* might be done in a future story: reference snak values linking to entities are formatted as links to these entities unless they have a sitelink on the client (tech note: do what the formatter for Lua does)
* evolving the data values to something human readable will be another story. The plain data values are good enough for this story