No save / load parameters if there is an in connection

[eduardfrigola]

Need for a hasInConnection(ofAbstractParameter &p) ??

[eduardfrigola]

also useful for not seting bpm if we are modulating it for example

[eduardfrigola]

induces some errors, for example if we have a non always trigger connection, like connecting parameters from oscillator banks to share behaviour.

[eduardfrigola]

Also when loading parameters manually from nodemdel does not check if there is the in connection