Add skills and education to searchable fields
Fix search bug for educations & experiences
Make selected last initial highlighted.
Refactor search method
Add 'clear' button to last initial facet
Add GPA field to profile
Add GPA facet to profiles index

Still needs 'clear' link to remove that facet from search.
Add 'clear' button when GPA range selected.
Merge pull request #34 from ucsd-ra/gpa-facet

GPA facet + skills