Added screencast.com to whitelist.rb

Adding onebox support to screencast.com could be useful.
Merge pull request #1448 from velesin/remove_redundant_presence

Remove duplicate mixing in of Discourse.Presence
mobile: fixed quote control jump
make category's RSS feed actually order by topic.created_at
if we have not automatic assets, don't try deleting them
Merge pull request #1454 from awesomerobot/master

mobile: fixed quote control jump
Merge pull request #1455 from alxndr/category-rss-ordered-by-created_at

make category's RSS feed actually order by topic.created_at
Merge pull request #1452 from velesin/remove_application_view

remove unnecessary (empty) view class
Fixed russsian localization
Merge pull request #1456 from Krugloff/patch-1

Fixed russsian localization
Merge pull request #1449 from seblavoie/patch-1

Added screencast.com to whitelist.rb
Revert "remove unnecessary (empty) view class"

This reverts commit 58ba8a0e49f0ac875c1eddfff843d3fe1927340f.
Fix missing provider param message when using Persona
Merge branch 'master' of github.com:discourse/discourse
Show mobile view as default for nexus 7 tablet
Typo fix
Merge pull request #1463 from gaurish/patch-3

Typo fix
adds unit tests for Discourse.Resolver