Use small avatar in the person json

closes #7376

Changelog.md

@@ -5,6 +5,7 @@
 * Remove jQuery deprecations [#7356](https://github.com/diaspora/diaspora/pull/7356)
 * Use empty selector where "#" was used as a selector before (prepare jQuery 3 upgrade) [#7372](https://github.com/diaspora/diaspora/pull/7372)
 * Increase maximal height of large thumbnail on mobile [#7383](https://github.com/diaspora/diaspora/pull/7383)
+* Reduce conversation recipient size [#7376](https://github.com/diaspora/diaspora/pull/7376)
 
 ## Bug fixes
 * Don't hide posts when blocking someone from the profile [#7379](https://github.com/diaspora/diaspora/pull/7379)

app/models/person.rb

@@ -271,12 +271,12 @@ class Person < ActiveRecord::Base
   def as_json( opts = {} )
     opts ||= {}
     json = {
-      :id => self.id,
-      :guid => self.guid,
-      :name => self.name,
-      :avatar => self.profile.image_url(:thumb_medium),
-      :handle => self.diaspora_handle,
-      :url => Rails.application.routes.url_helpers.person_path(self),
+      id:     id,
+      guid:   guid,
+      name:   name,
+      avatar: profile.image_url(:thumb_small),
+      handle: diaspora_handle,
+      url:    Rails.application.routes.url_helpers.person_path(self)
     }
     json.merge!(:tags => self.profile.tags.map{|t| "##{t.name}"}) if opts[:includes] == "tags"
     json