Hide Affiliate form

Hides the affiliate form behind COLLECT_INTERESTS, since AC doesn't want
it.

Also includes a minor improvement to the Javascript in the pre-reg form.
Replaces dealer checkbox and hides it

Reverts the dealer checkbox back to the canspam checkbox, and hides it
behind COLLECT_INTERESTS.
Merge pull request #740 from magfest/remove_affiliates

Hide Affiliate form
Merge pull request #741 from magfest/remove_email

Replaces dealer checkbox and hides it
Remove text reference to "Full weekend pass"

Changes the index page to say "Membership for Anthrocon" instead of
"Full weekend pass."
Pre-reg form text changes

Changes "con" to "convention," and adds a text notice about dealer
registration.
remove old Mag-specific analytics code
Add custom price-change text

Adds custom text to describe a single price change. Requires a new date
setting called first_price_bump.
Merge pull request #745 from magfest/change_text

Custom AnthroCon text changes
Replace hard-coded URL

Replaces the hard-coded MAGFest contact url with a new variable.
Merge pull request #746 from magfest/change_text

Replace hard-coded URL
Bootstrapify the post payment pages
additional fixes
Merge pull request #748 from magfest/pretty_postreg

Make post-registration pages pretty
Merge pull request #53 from magfest/ac-staging

Pre-go-live update