Activate data logging when session is already active.
Activate data logging when session is already active.

One can now activate the data logging when the session is already running, too.
When the data logging checkbox is checked, it will start the logging process exactly the same way it does when activating it before session start.
The session is not restarted or interrupted during this process.

Signed-off-by: Cristi Iacob <d9a5ee38e079268f5921cacbe589f9990ad49a4f@analog.com>

analogdevicesinc/Pixelpulse2,analogdevicesinc/Pixelpulse2,analogdevicesinc/Pixelpulse2