Add FAQ that shows a table/matrix of tested and recommended devices

[klues]

For some devices like robot vacuum cleaners, ambient light (IR light bulbs), blinds or radios it is maybe not clear for users which devices they can use, which can be controlled by IR and which are already tested and approved by the AsTeRICS team.

So the idea is to add a FAQ (or maybe also a section on the info page) which shows e.g.:

1. Category of device
2. Name of Device (+ Link to a shop?!)
3. Tick mark if it can be controlled by IR
4. Tick mark if device has been already tested by AsTeRICS Team (or someone else)

an open question is:

• does a list of supported devices maybe confuse users? If we provide a list of supported TVs, useres maybe think that other TVs are not supported, which will not be true in 99% of the cases