Adds support for metabolomics data type.
Adds metabolite support to high dimensional data pop-up.
Merge pull request #19 from thehyve/features/234-add-metabolomics

Features/234 add metabolomics
Added support for searching metabolite sub+superpathways in high-dimensional data popup.
Merge branch 'features/SAN-200_export_all_data' into rc2_dev