Adding name to the list of uneditable items in preferences UI

  * If enable_names,  enable_sso, and sso_overrides_name settings are true.
  * Added serialization of can_edit_name so the UI has access to the right.
Make Discourse.ShareLink easy for plugins

For example, this javascript code, if added by a plugin, would enable a Tumblr share link:

Discourse.ShareLink.addTarget('tumblr', {
  iconClass: 'fa-tumblr',
  generateUrl: function(link, title) {
    return ("http://www.tumblr.com/share/link?url=" + encodeURIComponent(link) + "&description=" + encodeURIComponent(title));
  },
  shouldOpenInPopup: true
});
updated spanish translation
improve Welcome to Discourse post
Merge pull request #2131 from vikhyat/poll-plugin

Poll plugin updates
Merge pull request #2122 from riking/extensible-share

Make Discourse.ShareLink fully extensible
Merge pull request #2128 from vikhyat/crawler-detection

Improved crawler detection
Merge pull request #2121 from LessonPlanet/disable-name-edit-for-sso

Adding name to the list of uneditable items in preferences UI
Merge pull request #2115 from vikhyat/badge-system

Initial badge system implementation
Update client.it.yml
Update server.it.yml
FEATURE: add a simple queue Scheduler::Defer.later {}

For quick jobs that do not need to be sent to sidekiq,
runs inline in a single thread but does not block
BUGFIX: last_seen_at can be nil
Fix spec, remove pointless have_many etc preamble
BUGFIX: work correctly if process forks
Merge pull request #2133 from Aselox/master

Update Italian Translation
Merge pull request #2132 from vikhyat/firefox-paste-image

Support image copy-paste for Firefox 24+
Merge pull request #2130 from nbalonso/spanish-translation

updated spanish translation
Badges, poll and french Translation

New Badges system
New string in the poll plugin + change the term "poll option"
Re-add some empty strings (like notifications.title)
And updates
Poll - Topic Term

Use topic instead of thread to keep the same term for the user.