Add WPCOM_Liveblog_Entry::get_fields_for_render to consistently retrieve an entry.
Add liveblog_entry_template_variables filter to allow easy modification of values used by the template.
Remove the call to re-set all array keys.
Merge pull request #82 from cfg/liveblog-entry

Abstract setting all the template fields needed for rendering

Allows easier customization of live blog entries without requiring template modifications