Inputs are not stored in BridgeAbstract::$parameters anymore to separate
static data from dynamic data.
The getInput method allows for more readable code.
Also fix an "undefined index 'global'" notice
Probability of breaking bridges: high !
Signed-off-by: Pierre Mazière <pierre.maziere@gmx.com>
if a bridge needs to modify some of the data that were initialized
there, ::__construct() should be used instead.
Signed-off-by: Pierre Mazière <pierre.maziere@gmx.com>