What is badge editor?

[altair]

…and how do we get it?

[manj_k]

Have a look at:

(1) http://ask.libreoffice.org/en/badges/
→ Editor = First edit (of a question / an answer)

(2) your profile - overview: Profile - altair - Ask LibreOffice
→ Badges → Editor

(3) Why is the date type not changed when I change it?