Change the StoreFactory configuration to reference to a resource instead of
defining the whole database. Additionally fix docstrings, fix imports and fix
function calls to comply to coding style standards.
refs #4503
Create the DbAdapterFactory to instanciate db adapters, add resources.ini to configure resources, change
the authentication Manager to fall back to backends with lower priority in case
of errors, update the current UserBackends to the changed environment. Also
adjust the documentation and existing unit tests.
resolves#4503
Fix installation instructions for postgresql, the user table is now
'account', as user is a keyword in some rdbms, now catching exceptions
and returning auth failed while logging errors
refs #3769
Set the default database and user to "icingaweb" in the authentication.ini. Add
instructions about how to set up the databases to authentication.ini.
refs #3769