Allow for more than one proposal with different user/password

[wyrzykow]

Currently it is allowed to define multiple proposal id/name, however only one set for user/password can be provided. It makes thing complex if there is proprietary data, which is not visible to all users.

LT_SETTINGS = {
    'proposalIDs': (('proposal ID1', ''), ('proposal ID2', '')),
    'username': '',
    'password': '',
    'LT_HOST': '',
    'LT_PORT': '',
    'DEBUG': False,
}

I suggest moving the username and password to the parameters of each individual proposal ID.

[jchate6]

Looks like a job for our extendable user profile that is currently under development.
Once it's implemented in the demo App, Perhaps the LT Facility should be next.