Add support to configure webhook_timeout in gitlab.yaml

Created by: wesgurn

Our Gitlab instance needed the ability to increase the webhook_timeout used by HTTParty. It was hardcoded at 10 and I moved it to a gitlab.yaml file as a config variable

Webhook settings

webhook_timeout: 30 # default: 10 - Number of seconds to wait for HTTP response after sending webhook HTTP POST request

spec/requests/api/session_spec.rb

@@ -14,7 +14,6 @@ describe API::API do
         json_response['email'].should == user.email
         json_response['private_token'].should == user.private_token
         json_response['is_admin'].should == user.is_admin?
-        json_response['can_create_team'].should == user.can_create_team?
         json_response['can_create_project'].should == user.can_create_project?
         json_response['can_create_group'].should == user.can_create_group?
       end