Specifically updates dropdown search and user-search implementation,
although does affect all inputs.
Decouples breadcrum and select-style dropdown search toggles.
Addresses #2678
- Removed harsh theme color border between search and content.
- Prevented intermediate focus on list container to align arrow & tab
behaviour, and to get to content quicker.
- 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
