Misc changes

• Registers are now called "signals" within the mod for consistency reasons.

Enhancements

• Added command alias rm for easier command entry.
• Added suggestions to command line interface.
• Added command to hide/show register overlay.
• Added command to move signals (formerly registers) up and down within a profile.
• Added support for comparators (powered) and redstone dust (powered and signal strength).
• Added command to append single blocks to a signal.
• Added pagination to profile list command.
• Added profile search command for finding profiles by partial name.

Bugfixes

• No longer possible to oversize a signal (formally register).
• No longer possible for the same blocks to be in a signal multiple times.
• Fix empty signal no longer appears as "all missing" in the profile overlay.