Moved primer quality code out of design code.
Reorganised files into appropriate folders
Changed formatting of console output
Fixed log output formatting
Created example test and comparison of output
Removed erroneously included folder
Merge branch 'refactor-hairpin-maketests' into refactor-hairpin
Fixed directory structure and removed analysis code from primer_design.py

Added extra .gitignore files so output folders (which are empty by
default) are included in commits.

Removed code from primer_design.py that was previously used for primer
analysis (hairpin & dimer) into seperate file in dev folder.
Moved primer-lint into separate repository