New neck profile names

To have a better comprehensibility and intelligibility, we have changes our neck profile names. Please note that we are only talking about the wording of how the profiles are named. The actual profiles themselves remain the same! So there is no reason for worries, nothing serious has changed.

D-round --> C-shape (standard profile of most guitars)
D-flat--> D-shape
V-shape--> V-shape (unchanged)