plugin: change tab text to Cactbot Config (#3852)
plugin: change tab text to Cactbot Config (#3852)

Apparently this was confusing to some users who thought the
"Cactbot" tab in OverlayPlugin meant that they had cactbot already
and didn't need to add an overlay.

cc @MyTechnoHunter
quisquous/cactbot,quisquous/cactbot,quisquous/cactbot,quisquous/cactbot,quisquous/cactbot,quisquous/cactbot