Fixes and enhancements, add LPJS scripts

Yeast-test:
Add LPJS scripts

Enhancements:
Improved error output
Improve code readability
fold-change: Add --debug flag
Add R normalization scripts for comparison
Add DESeq2 script for comparison
Replace %Agr with log2(FC): More generally useful

New scripts:
Add fasda filter for filtering fold-change output

Fixes:
fold-change: Add --near-exact to usage message and man page
Bring man pages up-to-date
normalize: Fix MRN bug (divide, not multiply)