Name changes for vortex types

The cappellon is now called the capillion
The revotron is now called the revodome
The gown is now called the exoduct
The Huygens belt is now called the hyperbelt
The solacone is now called the hyperkone (pronounced 'hypercone')
The corona pole is now called the amplipole

I've also added an explanation to each vortex type about the origin of the name, the reasons why those names were chosen. You can find the explanations along the pages where the vortex types are described. There you can also find the reason why I decided to discontinue the name 'Huygens belt', which was not an easy decision.