Added screencast.com to whitelist.rb

Adding onebox support to screencast.com could be useful.
remove unnecessary return statement inside Discourse.Router.map

Ember's Router.map(callback) method doesn't expect any value to be
returned by callback function. Therefore, return statements present
inside Discourse.Router.map are unnecessary (and are silently ignored by
Ember).
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
Remove duplicate create method in PostCreator
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
add edit and quote admonitions to seq reply warn
adds unit tests for Discourse.Model
Merge pull request #1472 from velesin/model_tests

adds unit tests for Discourse.Model
Merge pull request #1451 from velesin/remove_return_from_router_map

remove unnecessary return statement inside Discourse.Router.map
allow users to specify thumbnail size
German typo fix
Merge pull request #1474 from jhilden/patch-1

German typo fix