[OzzModz] Find Reactions 2.0.0

Changelog:

• Added [OzzModz] prefix to add-on title
• Fixed template errors on reaction to content by guest
• Fixed call to a member function getEntityContentType() on null

Added member stat modification to quickly navigate to reactions received by user
Added "list only" display mode (with special url param displayed without search form)

Added date range filter

New filter: by content author
Provide content URL if possible (with LinkableInterface from XF 2.2, and hard-coded for legacy versions)