Check to ensure a C-CDA Document templateId is in fact present

Possibly handle special case to report if a C32/CCD1.0 header is found:

```
<templateId root="2.16.840.1.113883.10.20.1"/> CCD
<templateId root="2.16.840.1.113883.3.88.11.32.1"/> C32
<templateId root="2.16.840.1.113883.10.20.3"/> H&P
<templateId root="1.3.6.1.4.1.19376.1.5.3.1.1.1"/> IHE Medical Document
```
