Add simplified Sampling overview in Clause 7.2

[KathiSchleidt]

Add simplified Sampling overview in Clause 7.2.

Use level of trivialization used in Figure 2 Properties of Observation (in 7.1.3)

Put into 7.2.1 Role of Sample features

[KathiSchleidt]

Use Well/Aquifer example (further below), explain that using sensor, so Well is the sample (doesn't need a dedicated specimen)

[KathiSchleidt]

Add descriptive text that both Well and Aquifer are placeholders for "water in"...

In addition, try to do a more complex version of Figure 8 including a Specimen that includes a Specimen taken from the Well, do a lab analysis (e.g. microbial analysis) on this specimen

[KathiSchleidt]

@sgrellet : can yo please confirm or complain?

[KathiSchleidt]

https://www.dropbox.com/s/snjbrpanarzpngj/OMS_Fig2AnnexDPix.pptx?dl=0

[KathiSchleidt]

Dropping the idea, will work on providing relevant info via github.io site