Added the ACF v5 Nav Menu Field code
Removed template comments, added useful comments, and fixed coding standards issues with the v5 code
Cleaning up the code in the main plugin class
Remove a leftover acf text domain string from the V5 class
Fixing one more annoying code styling thing in the v5 class
Added trailing comma for array
Big update of code style and code in general, so that I don't go insane looking at it.