Fix login/logout problem of old activities hanging around on back stack
from the previous users' session. More info in issue #142
Merge pull request #151 from lance0428/master

Fix login/logout issues
Using pipeline for syncing redis user stories.
Fixing pipeline.
Increasing task queue size.
Merge branch 'master' into circular

# By Samuel Clay (3) and Lance Johnson (1)
# Via Daniel (1) and Samuel Clay (1)
* master:
  Increasing task queue size.
  Fixing pipeline.
  Using pipeline for syncing redis user stories.
  Fix login/logout problem of old activities hanging around on back stack from the previous users' session. More info in issue #142