adjust rank function to take an options array
Allos specify the rank field
Refactor ranking to be more straightforward & flexible
add shortcus
Add in support for multiple ranking algorithms
Restore admin functionality
refactor ranking, and add a rerank function for more experiemnts
date_created was not getting set
Better detection when in/out of account
tweaking ranking algorithms
update db schema for 2.1
up version to 2.1.0