Admin Panel: For Paras, Add Dropdown to select Case Manager

[canjalal]

ACTUAL

If someone is turned into a para, they cannot be manually assigned or unassigned a case manager

EXPECTED

The admin should be able to switch a para to another case manager

Possible complications:

• A case manager should not be able to have their role changed until they have no more paras assigned to them
• A para should be allowed to be "orphaned"
• There ought to be no issues about tasks assigned to paras even after the para has been reassigned to a different case manager, i.e. they shouldn't lose access to their tasks

[canjalal]

@thomhickey what do you think of this issue?