Add conference archives and update a lot of things
Merge branch 'master' of github.com:cwruacm/acm.case.edu

* 'master' of github.com:cwruacm/acm.case.edu:
  FIx spelling errors and add relevant links
  Put conference info into past tense
  isaac whites bio/talk summary
  remove registration

Conflicts:
	app/views/acm/index.haml
	app/views/hacsoc/index.haml