I decided to shortcut this because it seems that nobody has interest in detailed description.

What is done in part 6. 

JM Admin plugin is a simple plugin for customization of the admin area look.

This functionality was initially been part of the JM Core plugin, but this plugin is used only for the quick fix of some things, and it is not recommended to use on live site.

What could happen when the theme author forgets how theme works

I have Landing Zero 2 demo online. Somebody reported an issue on android with the original Landing Zero theme (white page on android device). So I checked the same problem with online demo and ups, the same behavior with Landing Zero 2.  

New plugin Simple page released. Purpose: Easier editing page content with limited admin access

At first, I will not probably post this plugin on e107.org because it is a one-time plugin that I needed for a specific theme and website. That site will use pages in the one-page theme, but the users responsible for content are not familiar with e107. It was impossible to get them access to the full book/page/menu system or attempt to explain how this works. 

Because e107 is complex CMS system, there are some links that they always exist. If you want to make One Page site (just with scrolling), you should redirect those links to the Homepage. 

The former version of this plugin redirected everything except excluded pages to the homepage, but this is a better version, the version where you have things under your control.  

I updated inline css code and then I found that I haven't prefs done yet. So quick fix.