Added samtools for kalkyl
Added htseq
Fix typo in samtools file
set (some) modules to unset path/env changes on module removal
Added bgzip (from tabix)
Added grabix/0.1.2
Added fastq_screen 0.4.1, current fastq_screen.conf
Added seqtk
Added vcflib module loader (unsure of version -- github clone)
Add snpEff v3.4
Fix version number (3.4 -> 3.4i)
Added vcftools v0.1.11
Merge pull request #18 from mariogiov/master

Tool updates