Dashboard enhancements

[Ultimate-Storm]

• user data path config, scratch path config, set both into env variable in environment
• fl_admin docker image and docker net add in docker.sh, auto select all gpus
• goodaccess vpn config and credential distribute(according to org name selection)
• unit tests
• secured transfer between tud and other sites
• logo change
• fladmin should also generate docker.sh
• docker image download link fix
  • hardcoded
  • read from admin image define in dashboard
• user signup Organization selection
• add controller env path to docker.sh

        'task_data_name': os.getenv('DATA_FOLDER', 'DUKE'),
        'scratch_dir': os.getenv('SCRATCH_DIR', '/tmp/scratch'),
        'data_dir': os.getenv('DATA_DIR', '/mnt/swarm_alpha/odelia_dataset_divided'),
        'max_epochs': int(os.getenv('MAX_EPOCHS', 100)),
        'min_peers': int(os.getenv('MIN_PEERS', 2)),
        'max_peers': int(os.getenv('MAX_PEERS', 7)),
        'local_compare_flag': os.getenv('LOCAL_COMPARE_FLAG', 'False').lower() == 'true',
        'use_adaptive_sync': os.getenv('USE_ADAPTIVE_SYNC', 'False').lower() == 'true',
        'sync_frequency': int(os.getenv('SYNC_FREQUENCY', 1024)),
        'model_name': os.getenv('MODEL_NAME', 'ResNet50'),
        'prediction_flag': os.getenv('PREDICT_FLAG', 'ext')

Tobe controlled by user define(through dashboard or manual project.yml generation):

• scratch_dir
• data_dir

Tobe controlled by admin define:

• all the others