Add Ask Questions Properly guidelines about frontend HOT 1 CLOSED

Concise materials / sources of inspiration:

• http://catb.org/~esr/faqs/smart-questions.html
• https://stackoverflow.com/help/how-to-ask

The links above are useful as additional materials.

Our specific guide can contain

• some extracts from above (e.g. note on difference in context the asking person and his/her audience are) as intro;
• general structure of the question:
  • I am doing ..... (task name)
  • I want to... (achieve something, e.g. have an element on a web page to float above other elements)
  • I tried this... (code fragment, or codepen with minimal yet sufficient code fragment to reproduce the issue)
  • How do I....? / What did I miss?
• front-end specific tools to use:
  • https://codepen.io/
  • https://repl.it/
  • https://jsconsole.com/?q=console.log(%27AA%27)
• where to ask: link to a dedicated chat(s)

from frontend.