Added gaussian noise function.  Currently noise will not be added to measurements unless a user changes the initialization value and builds from source.

Added setter functions for HIL noise variances.  Researching methods to add zero mean gaussian random number before implementation

Increase timeout for param apply, make app wait run in a shorter loop to avoid having the OS concluding things do not work.

Airframe QML: Fix order-dependency of config. Highlight selected airframe more clearly. Allow combo box action to select the airframe as well. Allow single click on icon to select airframe.