#235 - AVEVA How to add a Trend and Historical Events

- The firs requirement is to configure the AVEVA Historian

- Ensure Historian is enabled in the AppEngine

- Note that it does not need to be enabled in the Platform

- In the Trend, add a Server (right-click Tools > Servers...), login with SQL sa / Password#1

- Pick the Tags, from the Server 127.0.0.1 at the top of the tree, drill down and select the tags

- Ensure that the tags are enabled for Historian, e.g. PP_HT1.AInput1.St.PV