Move and rename "About Plugins"

Its placement doesn't make sense, as evidenced by the amount of votes on this question and its answer:

http://stackoverflow.com/questions/16443385/how-to-disable-version-control-features-in-qt-creator

Also note the comments on the answer:

(P.S. I looked through every single menu EXCEPT the Help menu. I can't think of any other program that has program feature settings in the Help menu. Ha!)

Yeah, it should be in preferences. It also shouldn't be called About Plugins, as 99% of the time you aren't accessing it to read the plugin About blurb...

Tools would be the natural place for it, IMO. If I was a new user, I'd probably look there first, and then check if it had its own tab in Tools > Options (like Build & Run, etc).