Command key and Help

[JeVaughan]

• Referencing (Start reference with autocomplete Autocomplete for Note References #6 then skip closing brace)
• New Page Reference (Create reference here then immediately focus the new page)
• Images / Linking
• Bold / Strike / Italic
• Code / Blocks
• Todo / done
• Highly visible help page (builtin page with restricted edits Restricted Edit View #16)