Simplify the `#with_title_containing` scope
Simplify the `#with_title_containing` scope

This is never called with a list of keywords, only ever called with a single keyword.

This allows us to simplify the code significantly.

ggoral/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,askl56/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,askl56/whitehall,robinwhittleton/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,alphagov/whitehall,YOTOV-LIMITED/whitehall,YOTOV-LIMITED/whitehall,askl56/whitehall,ggoral/whitehall,hotvulcan/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,robinwhittleton/whitehall,alphagov/whitehall,hotvulcan/whitehall,ggoral/whitehall,askl56/whitehall