Changing `fundraiser_node_view()` to only alter the body content when `!$teaser && $page`

Changing `fundraiser_node_view()` to only alter the body content (to display `fundraiser_http_error_message`) when `!$teaser && $page`, instead of just `!$teaser`.

When viewing a donation form on an unsecured search results page, `fundraiser_node_view()` was replacing the body content with the contents of `fundraiser_http_error_message` because the search results page calls `node_view()` with both `$page == FALSE` and `$teaser == FALSE`.