Created a new class to manage formatting of content for search results.
Turned out to be quite a complex task. This only does the preview text
so far, not titles or tags.
Not yet tested.
Relations now loaded during back-end query phase instead of being lazy
loaded one-by-one within views.
Reduced queries in testing from ~60 to ~20.
Need to check other areas list-item.php's "showPath" option is used to
ensure relations are properly loaded for those listings.
- Primarily moved and re-organised view files.
- Included readme within views to document the convention.
- Fixed some issues with page field select list in previous commit.
- Tweaked some route names while going through.
- Split some views out further.
Closes#2805
