Add IG footer to extract.

refs #172
Update session timeout settings.

refs #141
Fix tests
Merging master into extract
Improve display of line.
Add schema to customise columns for OPAT.
refs #170
Update database schema to bring OPAT branch into line with mainstream elCID.
Merge branch 'master' into extract
experiment w. micro columns
Update to extract reqs and brand
Move tags into the database.

refs openhealthcare/opal#198
Merge branch 'master' into extract