Merge app_manager_utils into this repo

[knorth55]

Depends on: https://github.com/jsk-ros-pkg/jsk_common/tree/master/audio_video_recorder

this PR merge app_manager_utils into app_manager.
I want to developapp_manager_utils packages with other developers (mainly JSK students), so I made this PR.
https://github.com/knorth55/app_manager_utils

I add following plugins:

• app_scheduler
  • app scheduler
• app_notifier
  • mail notifier
  • speech notifier
  • user speech notifier
  • tweet notifier
• app_recorder
  • video recorder
  • audio recorder
  • rosbag recorder
  • result recorder
• app_uploader
  • gdrive uploader
• app_notification_saver
  • service_notification_saver
  • smach_notification_saver

I remove audio_video_recorder plugin because audio_video_recorder is not merged and released yet.
jsk-ros-pkg/jsk_common#1672

related: knorth55/app_manager_utils#13
related: #25

[knorth55]

I update this PR to follow the recent knorth55/app_manager_utils.