Especially at user without "" PostgreSQL likes to fail.

This is important in the Active Directory case where users are
currently getting a GUID in the From field, making emails look quite a
lot like spam.

highlight groups with markup (bold font) instead of "(group)" postfix

ref owncloud/core#173

Upgraded infield labels plugin to the latest version. Updated invocation to opt-in to pollling at the same duration you were using before, 100ms

Tabindex="0" makes the element focussable with the keyboard and
role="link" tells assistive technologies that this clickable span
element is supposed to be presented as a hyperlink.

itemType is never "dir"; it's either "file" or "folder".

Added HTML escaping