Add poll plugin.
Removing more stuff from the sanitizer whitelist
Remove audio and video tags as well
Don't render 'Reply' button when user can't post
Use ERB when importing conf files into app
Added and updated Spanish translations

Updated:
1. client.es.yml
2. server.es.yml
3. server.en.yml
Don't display edits during user's name update
fix typos in posts_controller_spec.

fixing 'suceeds' typo.
Fix subcategories links from search
Use --no-document instead of --no-rdoc/--no-ri.

gem says --rdoc and --ri options are deprecated.
Scroll to top on Site-Setting category render
Merge pull request #1960 from verg/subcategory-search-links

Fix subcategories links from search
Merge pull request #1962 from eflynn/master

Use --no-document instead of --no-rdoc/--no-ri.
Merge pull request #1954 from verg/unbind_user_name

Don't display edits during user's name update
diff heaps used for memory leak detection
FEATURE: allow overriding server static asset if needed
BUGFIX: Use ENV["USER"] before falling back to postgres
FEATURE: search auto scopes on topic first
BUGFIX: search could break when expanding
BUGFIX: allow facebook auth for people refusing email