Allow to find an item without a selected element when using the type "does not contain" in advanced search.
Translate advanced search in item filter display.

Submitted by @mjlassila.
Simplify admin item form tab prep.
Use more specific selector for admin thumb styles.
Add record class to single record partials.
Add auto-disable for advanced search terms.

Fix ID duplication.
a11y: use actual text on remove input button
a11y: improve labels for advanced fields
Update translation template.
Enable sliding button panel for admin search.
Make collection browse closer to item structure.
Allow to filter on a list of values via a query with "IN".
Always use protocol-relative URLS for fonts.
Show placeholder thumbs for featured items.
Avoid double-queries for prev/next item on admin.
Update shared javascripts.
Strip HTML from titles on batch edit.
Fix #623, remove podebug translations on en_US.
Follow Omeka core style guidelines for conditional structures.
Add form tabs for files/edit.