Changed font, tweaked nav, revamped grant creation, and more...

- New font
- Restyled Nav
- Added custom BPSF logo
- Added default images
- Placed default image examples in slideshow
- Combined sign in and sign up pages
- Changed grant creation layout
- Added hints for all fields in grant creation (click on the titles)
- Added youtube style loading bar to top of page 
- Fixed footer glitch on grant show page