Fixes #5846 - CV index sql error

The readable pluck call in the  Content Views Controller previously
 didnot specify the table name for the id.
So a SQL error was being raised in the AK page
when a list of content views were requested from the server.
Fixed this by specifying the table name in the pluck call
Merge pull request #4126 from parthaa/cv-fix

Fixes #5846 - CV index sql error