Don't float icon

It has been in the queue for two and half years now, and there has not been a single objection to this.

I think this proposal makes a lot of sense. It is the same height as standard text, and having it inline allows the developer to position it freely.

It is going to have a small cosmetic impact on how the help icons display in Views and other projects that relied on it floating left (they will appear above instead of to the left of the item). But it is only cosmetic and simple to fix.