Add link_nextseq.py - similar to link_rapidrun.py
Merge pull request #2 from fwip/add_nextseq_linking

Add link_nextseq.py - similar to link_rapidrun.py
link_nextseq.py fixes

* Include fastq files with double digit S#s
* Only try to create a symlink if it doesn't already exist
Improve fastqc qsub job naming
Improve sample script basename in create_processing.py for multiple instances of a single sample
Makefiles don't need make in their name, of course they make
Link Undetermined indices for nextseq