Display of calibration data and time stamp added to profile tab

The profile tab now shows if there is radio settings like calibration data in the profile or not. It also displays a storage date for the data.

The radio settings are time stamped when they are saved to profile. I would prefer to stamp them when they are retrieved from the sender, but this is not possible in any good way with the current file format. I intended to use file storage times, but this turned out to be a bad idea since the date can get screwed up in a lot of different ways.