Intelligent channel name and comment handling for merging

When merging multiple measurements with same channel name (e.g. 'mic1') but different comment (e.g. 'in front', 'behind' etc.) the handling of the new channel names and new comment is suboptimal.

Suggestion for merging:

• When channel names are similar AND comments are different, use the different comments as channel names and similar channel name as comment for new object