Tag performance 2
Tag peformance rake task and logger
Fixing the old bug in search: tag must be manually preceded with # by user
Final tag fixes
Clean up rake task description
Update rails to latest: 3.2.17
Update version to 1.5.2
Merge branch 'release-1.5.2'

Deployment steps:
1) rake db:migrate
2) rake tagteam:update_tag_count  #runs async, but will take a while to finish
3) Done.