minor/better-integrations

[halfmoonui]

• Move integrations.py to gitignore
• Support local disk media storage (default in base.py settings)
• Add support for Gmail for email provider, and local SMTP (TODO in install script?)

Please note, because integrations.py is no longer in the repo, the following should be the default that is generated:

SOCIALPASS_INTEGRATIONS = {
    "email_provider": "local",
    "error_reporting": False,
    "maps_provider": False,
    "media": "local",
    "oauth_google": False,
    "token_verification": False,
    "stripe": "direct",
    "wallet_apple": False, # Maybe true if we can share cred?
    "wallet_google": False, # Maybe true if we can share cred?
}