Generate costsBudget with functions, Removed a dupe

lowercasedonkeyrequested to merge
lowercasedonkey/fc-pregmod:generate-costsBudget-with-functions-like-repBudget into pregmod-master

All backend stuff, displays the same.

This is much easier to read, change, and catch dupes. Removes a lot of duplicate code, and matches the newer repBudget screen.

In fact, I found yet another dupe while I was doing this.

Merge request reports