Get more than one error to display on error log
Add link to /error/ on error.html if user is admin

Fixes #625
Change default value on error_log.html

Now displays the current number of entries rather than always 100
BUG: Fix incorrect rendering of public studies

The page was being rendered incorrectly because of a small confusion in
the tornado template.

Fixes #623
Fix order of imports in study_handlers.py
Add download handler
Add download button to study_description.html
Merge pull request #627 from ElDeveloper/issue-623

BUG: Fix incorrect rendering of public studies
merging @adamrp changes
Merge branch 'master' of https://github.com/biocore/qiita into issue_533
Merge pull request #626 from adamrp/link_to_error-issue-625

Show more than one error on error_log.html
Merge branch 'master' of https://github.com/biocore/qiita into issue_533
temp state