Better error message when cannot select demo or pro profile

[andreacalia]

At the moment, the code looks for profiles that contain "pro" and "demo" in the (sub)name to determine which one to select by default (depending on the configuration).
When multiple profiles are found it cannot choose and it throws. E.g. it cannot choose which one to select when the following are present: lsa.demo, lsa.demo-first-bunch.

Proposals:

1. Sort the found profiles by name and select by default the first one
2. Still throw but with the multiple profile names in the error message so they are easy to identify in the code