Updates to the faculty and directory website areas

Quick Summary:

1. Added First (First name) field.
2. Added Area of Expertise, Advising Duties, Teaching Area fields. These fields replace the Emphasis column heading in the Google Doc
3. Position Category. Default terms are Faculty, Lecturers, Staff. Used by the PathAuto module to build URL alias (e.g. /staff/419/bren-ahearn)
4. Change Faculty menu to Faculty and Staff. Added the following submenu items: Faculty Advisers, Lecturers, Staff.