* Fix inconsistent insulated mesecon names
* Clarify lightstone names
* Rename meselamp to "Mesecon Lamp"
* Use capitalization "Luacontroller" consistently
* Cleanup / improvements for logic gate naming

Call mesecon.on_dignode / mesecon.on_placenode to take care of that.

switch

flexibility and because it was never inteded to be OOP in the first
place.

mesecon.receptor_on and mesecon.receptor_off are provided by wrappers
(mesecon:receptor_on/off) for compatibility, but will be removed. Mod
programmers that use mesecons: Please update!

Also, fix microcontroller polluting the global namespace and remove some
deprecated stuff.

wires 2 nodes below them, allows to hide circuitry powered by them.
Fixes #179
Rewrite pressure plates + vertical wires using mesecon.register_node.

large machines.

It also makes the wires.lua code easier to understand and more
maintainable. In case any other mod depends on
mesecon:update_autoconnect, please update it to use
mesecon.update_autoconnect. This should also fix some other minor bugs.
Please report bugs if this commit creates new ones.

This commit changes wire looks and removes some unneccesary textures.

texture for the sides (still uses the "full" for the top/bottom of the
caps).

* Craft them from three wires in a vertical row
* Craft them back into mesecons by just putting one of them in the grid

on the bottom.