Fixed case sensitivity in the tag search API (/tags/search).
Fixed case sensitivity in the tag search API (/tags/search).

There was still a problem for matching the search on a cluster name. I have also slightly simplified the construction of the SQL request for better code readability.

MISP/MISP,MISP/MISP,FIRSTdotorg/MISP,SteveClement/MISP,SteveClement/MISP,FIRSTdotorg/MISP,SteveClement/MISP,SteveClement/MISP,MISP/MISP,MISP/MISP,FIRSTdotorg/MISP,FIRSTdotorg/MISP,MISP/MISP,SteveClement/MISP