Make sure issue assignee is properly reset.

app/assets/javascripts/project_users_select.js.coffee

@@ -25,7 +25,7 @@ class @ProjectUsersSelect
 
         initSelection: (element, callback) ->
           id = $(element).val()
-          if id isnt ""
+          if id != "" && id != "-1"
             Api.user(id, callback)
 
 
@@ -44,9 +44,6 @@ class @ProjectUsersSelect
     else
       avatar = gon.default_avatar_url
 
-    if user.id == ''
-      avatarMarkup = ''
-    else
     avatarMarkup = "<div class='user-image'><img class='avatar s24' src='#{avatar}'></div>"
 
     "<div class='user-result'>

app/helpers/issues_helper.rb

@@ -58,22 +58,11 @@ module IssuesHelper
   end
 
   def bulk_update_milestone_options
-    options_for_select(['None (backlog)']) +
+    options_for_select([['None (backlog)', -1]]) +
         options_from_collection_for_select(project_active_milestones, 'id',
                                            'title', params[:milestone_id])
   end
 
-  def bulk_update_assignee_options(project = @project)
-    options_for_select(['None (unassigned)']) +
-        options_from_collection_for_select(project.team.members, 'id',
-                                           'name', params[:assignee_id])
-  end
-
-  def assignee_options(object, project = @project)
-    options_from_collection_for_select(project.team.members.sort_by(&:name),
-                                       'id', 'name', object.assignee_id)
-  end
-
   def milestone_options(object)
     options_from_collection_for_select(object.project.milestones.active,
                                        'id', 'title', object.milestone_id)

app/services/issues/update_service.rb

@@ -14,6 +14,9 @@ module Issues
         issue.update_nth_task(params[:task_num].to_i, false)
       end
 
+      params[:assignee_id]  = "" if params[:assignee_id] == "-1"
+      params[:milestone_id] = "" if params[:milestone_id] == "-1"
+
       old_labels = issue.labels.to_a
 
       if params.present? && issue.update_attributes(params.except(:state_event,

app/services/merge_requests/update_service.rb

@@ -23,6 +23,9 @@ module MergeRequests
         merge_request.update_nth_task(params[:task_num].to_i, false)
       end
 
+      params[:assignee_id]  = "" if params[:assignee_id] == "-1"
+      params[:milestone_id] = "" if params[:milestone_id] == "-1"
+
       old_labels = merge_request.labels.to_a
 
       if params.present? && merge_request.update_attributes(