As an editor I want to be able to read the references shown in the Bridge.
**Problem:**
For anything but simple datatypes the formatting contains additional markup etc. We should remove it.
**Screenshots/mockups:**
TODO
**BDD**
GIVEN a statement with a reference
WHEN editing that statement in the Bridge
THEN the value is shown in a human-readable format
**Acceptance criteria:**
[ ] reference is formatted in a human-readable way
**Notes:**
* There are a lot of properties that can be expected to be a part of a reference (https://www.wikidata.org/wiki/Wikidata:List_of_properties/Citing_sources). We can't cover all cases.
** For now we try to go with a format that is similar to this: "$title. $author. $publicationdate. <everything else in the order it is on the repository>. Retrieved $retrieveddate" $title would be linked to the reference URL if available. If a reference URL exists but no title then we spell out the URL instead of the title.
** We will want to make the formatting a bit more sophisticated later but for now that probably suffices. We expect that others will want to be able to use the same reference formatting via the API and Lua in the future so wrapping this into a standard API would be useful.