Section-to-Levels commands

Added section-to-level and level-to-section commands for use in nested
nomenclature sets.
Made nestable Groups within Nomenclature

Need nesting level IDs for multiple groups at the same level.
More Nomenclature Work; nesting still broken
Merge remote-tracking branch 'origin/master' into Nomenclature
Merge remote-tracking branch 'origin/master' into Nomenclature

Conflicts:
	Tests/Test_Programming.tex
	UWMadThesis.tex
	WisconsinThesis.Module.Programming.tex
Repaired merge inexperience/stupidity