Springboard Stats Work in progress: Added in the remaining stats fields for donation forms, and tweaked existing definitions.
Work in progress: Fleshed out one way of implementing the stats field updates.
Work in progress: Completed field update code the non-performant way.
Basic Springboard Statistics functionality cleaned up and working. Also added springboard_stats_update_all_fields() consolidated logic for better performance.
Added springboard_stats.install logic to populate newly-created stats fields for existing nodes. Note: a line of test code at the top of _springboard_stats_add_default_fields() is included here because bizarrely the code crashes without it. @TODO: Remove it.