[1.12.2] 1.80pr1.7

Changes from the last CC:Tweaked release

• Add .getNameLocal to wired modems: provides the name that computer is exposed as on the network. This is mostly useful for working with Plethora's transfer locations, though could have other purposes.
• Change turtle block breaking to closer conform to how players break blocks.
• Rewrite rendering of printed pages, allowing them to be held in hand, and placed in item frames.

Minor fixes

• Improve formatting of /computercraft when run by a non-player.
• Fix pocket computer terminals not updating when being held.
• Fix a couple of minor blemishes in the GUI textures.
• Fix sign text not always being set when placed.
• Cache turtle fakeplayer, hopefully proving some minor performance improvements.