I. Missing asterisk - for trunk
Steps to reproduce:

1. Go to Triggers - Create Trigger
2. Click Expression Edit
3. Choose Item with numeric data
4. Choose Function sum(), avg(), or last(), max(), min(), etc...
5. Leave Last of (T) field empty (Both dropdown values Time or Count)
6. Enter N value and submit
7. Get error that Last of (T) field is mandatory.

Expected:
Red asterisk should be added to Last of (T) field.

II. Disabled Count field in band() function - only for 3.0 and 3.4 versions.

1. Go to Triggers - Create Trigger
2. Click Expression Edit
3. Choose Item with numeric data
4. Choose Function band()
5. In Last of (T) field choose dropdown value Count - filed remains disabled, so cannot fill it in.
6. Enter all other values and submit
7. Get error that Last of (T) Count parameter is mandatory.

Expected: When choosing Count dropdown value field should become editable.