Move logging function to its own file, add additional supporting functions
move point-related functions into their own file
Added  to badgeos_build_achievement_object()
Setup new file for tracking acheievement activity via user meta
Correct achievement cache buster minimum role check
fix two minor issues with badgeos_get_user_achievements() returns when user has no achievements
add 'since' param to achievement completion check for sanely handling badges that can be earned more than once
Look for user's completed achievements rather than re-testing if a step has been/can be awarded
update completed achievements check because we already compensate for the time shift in the updated function
and 'since' check for badgeos_get_step_activity_count()
Merge pull request #94 from opencredit/activity-tracking

Merge activity tracking edits into alpha