Merge pull request #81 from wtsi-npg/master

pull from wtsi master to devel (release 74.12)
data_access_group method to lims (study) to determine data access control requirements
add new staging area (50)
Merge pull request #82 from dkj/devel

Data access and new staging config
Add methods (and tests) for returning inline_index_start and inline_index_end
Be more explicit in _parse_sample_description
Merge pull request #83 from jenniferliddle/devel

Add methods (and tests) for returning inline_index_start and inline_inde...
Merge pull request #84 from wtsi-npg/devel

new inline_index methods