add teams application controller

app/controllers/teams/application_controller.rb

+class Teams::ApplicationController < ApplicationController
+  before_filter :user_team, only: [:index, :show, :edit, :update, :destroy, :issues, :merge_requests, :search, :members]
+
+  protected
+
+  def user_team
+    @user_team ||= UserTeam.find_by_path(params[:team_id])
+  end
+
+end