Release v6.8.2

• [fix] urlencode webform list's link
• [fix] Permission for Feed
• [fix] re-make setup wizard slides on change of language
• Update users-and-records.md
• Update doctype-directory-structure.md
• Update doctypes.md
• Update setting-up-the-site.md
• Update how-enable-developer-mode-in-frappe.md
• Update v6_4_8.md
• [hotfix] Setup Wizard language loading
• change "bench frappe --doctor" to "bench doctor"
• [minor] [fix] don't let success message break web form
• [minor] parent_web_page cannot be self
• [minor] don't delay messages if minimized
• [minor] [enhancement] ability to make web-form standard