Merge pull request #273 from SciLifeLab/develop

Develop merge
include tag in log file names
include option for number of cores
bugfix
optional samplesheet
add option to ignore missing files
fix bug with flowcell identifier
Merge branch 'master' of github.com:SciLifeLab/scilifelab into develop
corrected help info
Merge pull request #274 from b97pla/develop

Develop
reverted to include flowcell position in id
Merge branch 'master' of github.com:SciLifeLab/scilifelab into develop
include flowcell position in flowcell name
Merge pull request #275 from b97pla/develop

Develop
fix change in samplesheet dict structure
Merge branch 'master' of github.com:SciLifeLab/scilifelab into develop
include flowcell position in sample status flowcell name
expanded regexp for matching fastq_screen results
bugfix
Merge pull request #276 from b97pla/develop

Develop