finished manual for next version other than possible addition of fake data and posterior predictive chapter
fixed refresh doc by removing refresh=0 and adding redirect to /dev/null option
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/issue-485-next-manual
fixed all outstanding bugs and added all requested clarifications
many updates to manual including identifiability chapter
slight revision to identifiability based on comments from Ben
resolved acknowledgement conflicts
updated problematic posteriors section, removing identification references
finished problematic posterios chapter, updated hoffman-gelman in press to 2014
manual ready to go for 2.2.0, completing issue #485
Merge pull request #559 from stan-dev/feature/issue-485-next-manual

Fixes #485. Feature/issue 485 next manual