Markdown WYSIWYG editor

[jon-nfc]

Update the Markdown editor to be "What You See is What You Get" (WYSIWYG) editor.

Details

Update the markdown editor component to be a fully contained WYSIWYG editor. It should support: the common markdown, slash commands and any custom markdown capabilities (emoji, tickets, item links).

Links

• Blocked By: Menu Component required #69

Tasks

• menu for admonitions
• dropdown menu on detection of slash command /, as the user types search the API for the item. (after type has come up. i.e. $device-<name>)
• dropdown menu on emoji detection : as user types, show list of emoji
• dropdown menu on ticket detection # search for tickets by name
• create ticket from task list item
  for ticket from task list item. any item under task list (indented 4xchars) will be used as the ticket description with it being removed from original ticket

Requirements

• pressing enter on list makes next line a part of same list.
• double enter after empty list item removes empty list item and starts a fresh paragraph
• All pressing of enter adds a single space \s to end of line (required for command processing)