Link to project home page

[jmewes]

Following the "ADL Workbench home page" link on the wiki start page leads to a "Not found" error page:

https://www.openehr.org/downloads/ADLworkbench/home

It would be nice if the link there gets updated to what appears to be the new URL:

https://www2.openehr.org/downloads/ADLworkbench/

Also this link would be helpful, e.g. in the GitHub project header:

http://openehr.github.io/adl-tools/adl_workbench_guide.html