Single click links from store pages to other parts of arduino.cc

[BallscrewBob]

When vising the store there are no RETURN links to the other sections of the site.
May be useful to have them in the very top bar when you are in the store to aid navigation.

Only other way is to use the upper left ArduinoCC link and then navigate once again.
With the present AUTH0 issues this may involve up to 3 seperate logins or two if you jump from the main page to the forum.