Amended search to not break on non-alpha-num chars
Amended search to not break on non-alpha-num chars

And also fixed exact term matches that contain non-alpha-num chars
Fixes #212

oomba/the-loud-cartographer,oomba/the-loud-cartographer,oomba/the-loud-cartographer,Abijeet/BookStack,Abijeet/BookStack,Abijeet/BookStack,BookStackApp/BookStack,BookStackApp/BookStack,BookStackApp/BookStack