Add new addColumn functions that give a aoption to make the column sortable

#3487
Data grid can now have footers and have not sortable columns

A24group/Triage#3487
A24group/Triage#3494
Merge remote-tracking branch 'upstream/master' into feature-optional-sorting-3487
Merge pull request #195 from A24Group/feature-optional-sorting-3487

Add new addColumn functions