Left mouse button

The left mouse button is used to move objects.
 * Move operations in the main window
 * Move single nobs (network objects), like neurons or dendrite sections: Position mouse cursor over the nob. The outline of the nob changes color as soon as the nob is ready to be moved. Press left mouse button and move mouse. The nob will move together with the mouse cursor as long as the left mouse button remains pressed. After releasing the left mouse button, the moved nob stays where it currently is.
 * Move EEG sensor: Similar to nobs.
 * Move selection: If a selection is active, press the left mouse button together with the SHIFT key anywhere on the background of the main window, keep it pressed and move the mouse. All selected shapes will move together.
 * Move the entire model: Press the left mouse button anywhere on the background of the main window, keep it pressed and move mouse.
 * Move operations in the mini window. The mini window allows to navigate quickly in the model. This is useful especially if the main window shows only a small section of the whole model. Press left mouse button anywhere in the mini window und and move the mouse
 * Move operations in the EEG monitor window
 * Move signals TODO
 * Move tracks TODO