Remove hungarian notation #341

We're trying to remove the hungarian notation. Doing it once and for all is better than piecewise because the latter mixes both styles and is confusing/error-prone.

If someone can come up with an automatic way to do it, that would be great. Unfortunately, there are some places were variables have identical names except for the "hungarian" part. E.g. fData and iData. In such cases, we should either keep hungarian or come up with better variable names.