Fix dbw#80 Analyst widget default = logged in user

The widget displays values in this order:

1 Analyst is set on Analysis
2 Analysis is assigned to a worksheet: Worksheet's assigned analyst is displayed.
3 Currently logged in user, if "Manager" or "Analyst" roles are present
4 Empty value.
reapply e4f18de (LIMS-671)
reapply fix for LIMS-3010
fix tests
LIMS-1271 fix currency indicator
Release 3.1.3
Merge branch 'hotfix/3.1.3'