Add missing enrollment codes for a student exiting

[ghachey]

Currently the options are

• Transferred out
• Dropped out

We need:

• Completed (type drop)
• Expelled (type drop)
• Deceased (type drop)
• Suspension (type drop)

Just like "Transferred Out" should enable another dropdown box with a list of schools. We should also have a similar way to have a

[ghachey]

When selecting Dropped Out (exit code) we should have a new field dropdown "Dropout Reason". The items should be configurable in the settings. On a per-school basis and with a apply system wide to apply the settings to all schools in the system.

Similarly, When selecting Expelled (exit code) we should have a new field dropdown "Expelled Reason". The items should be configurable in the settings also. On a per-school basis and with a apply system wide to apply the settings to all schools in the system.