Feedback button/menu at the SN lab

[gkwan-ibm]

There is a "Support" button/menu at the right side of the SN lab IDE.
Suggest to have a "Feedback" button/menu or rename "Support" to be "Support/Feedback".
Also, add a "Open Liberty guides category" category for the feedback.

[gkwan-ibm]

https://github.ibm.com/skills-network/labs/issues/1037