[Bf-docboard] restructuring the Getting Started -> Interface section

[Gaia]

Hi;

I have been looking into the chapter

     Getting Started - Basics - Interface

This chapter contains a lot of information which
i believe is not exactly about the Interface but more
about how to use some parts of Blender.

Based on the assumption that this chapter should
be about how the interface works in general
i propose to cut down the current structure and move
some documents to other places (or even delete some).

Besides that i would like to know how to name
the part of the screen in which an Editor lives.
In the docs i find all of this:

"Editor", "Window", "Window Frame", "Frame"

It is not even clear to me if this means the same
thing in the documents or slightly different things.

I have chosen "Frame" as a placeholder
for now:

definition: Frame is a rectangular area on the
Blender window which hosts an Editor.

###############################################
   Proposed structure for the Interface chapter
###############################################

# Interface
   - Elements
     . principles      (done)
     . Screen elements (done)
     . Screen Layouts
     . Editors         (done)
     . Sidebars        (done)
     . Header          (done)
     . Main region     (done)
     . Headers
       - hide/show
       - collapse/expand Header menus
       - navigate
     . Panels          (done)
     . Tabs            (done)
     . Pinning         (done)
     . Data Input
       - Sliders
       - alphanumeric input
         Expressions
         Units
       - Color Pickers (not sure)
       - Eye Dropper (not sure)
       - Color Ramps (not sure)
       - Curve Widget(not sure)

   - Input Devices
     . Supported devices
     . Recommended configuration

   - Blender Frame System
     . Frames
     . Arranging Frames
     . Maximizing a Frame
     . Splitting Frames
     . Joining Frames
     . Change Frame Size
     . Swap frames
     . Open Frame in new Window

   - Special Windows
     . The Blender Console
-Windows Console
- Linux Console
-Mac OS Console
. Operator Search (not sure)
     . User Preferences (not sure)

   - Screen Layouts
     . The Start Screen Layout
     . Customizing the Start Screen Layout
     . Predefined Screen Layouts
     . Adding a new Screen Layout
     . Deleting a Screen Layout

   - Scenes
     . Add a new Scene
     . Delete a Scene

############################
   Propose to move or delete
############################

I propose to move the following parts out of the Interface section:

- The Window System is mostly a brief description
   of the 3D View and the Properties editor

- From Input Devices:
   - Conventions -> Conventions document)
   - Mouse Button emulation ->Customization
   - NumPad Emulation -> Customization
   - non english Keyboard -> Internationalisation

- From the Console Window:
   - Common Messages(delete)

- Window Types (delete, done already)

- From Screens:
   - Additional Layouts (delete)

- From Scenes:
   - A brief Example (delete or move to a "working with scenes" document)

- Modes (move editors/3DView)
- Contexts (move to editors/Properties)
- Buttons and controls (mostly delete)
   - i have added parts of this to the Data Input section (see above)
   - Common Shortcuts (move to conventions document?)