Latest Changes all put together

1) Replaced gopher with Maharaja Logo
2) Added 3 inner pages, one each for
 2.1) call for proposal 
 2.2) proposal advice (edited)
 2.3) proposal resource
3) Modified the footer to have links
 3.1) Speaking
4) Added sponsors and supporters section to home page.
5) Give a talk is now linked to the call for proposal page