Add support for RoleGrade CRUD in lookups

[Ghislain Hachey]

Since RoleGrade is actually the table used to populate the list of Teacher Roles in the workbook it is essential to be able to work with this in the UI. Currently users try to edit Teacher Roles and it has no effect.

[Ghislain Hachey]

feat(Lookups): support for RoleGrades data management

Resolves #1337

→ <<cset 6c7349552ed4>>

[Ghislain Hachey]

Now it is possible to manage RoleGrades data. This needs to be done in “link” with Teacher Role. Basically, RoleGrades are more detailed Teacher Roles defining also pay scales. So first step is to put all the roles. Example as shown below.

And then put more detailed RoleGrades as shown in example below.

If the pay scale is not desired simply create the same teacher roles and grade roles. They are linked together in Teacher Role Code so Teacher Roles are defined first, then Grade Roles.

Finally, it is the Grade Roles that will be listed in the annual school census workbook.