LOCATIONS: TransectIDs vs MatIds.

As I gain a better understanding about the experimental protocols, old dilemmas become more clear.

In the past, we added sampling locations for the dataset "Stream Microbial Mat Biomass (Chlorophyl-A and Ash free dry mass)" that were a bit different than the transectIDs, which were the traditional IDs used.

Earliy (pre-2008s) locations for the stream-mic-biomass were rooted on transects. But many recent studies include "occasional" non-transect sampling locations. I added many to the transect-ids, but this might need revision.

This ticket is a placeholder for a possible rearrangement of such transect-ids, etc.