Further reduced redstone idle CPU consumption

* Repeaters and wires are no longer unnecessarily ticked
* Fixed #1063, likely addressed #1062
* Fixed bugs regarding duplicate values
Fixed a typo.
Fixed mob hitbox sizes, removed TODOs

Measured bat and blaze in vanilla, updated values.
Cavespiders are, in fact, passive in the day.
Further improvements on redstone speed

Based on suggestions of @worktycho
* Repeaters now walk their data structure only when needed
* Fixed a bug with cChunkData returning an incorrect value for whether a
meta had changed
Added RainbowRoads finisher generator.
docs/Generator: Added the easy Finishers.
docs/Generator: fixed grass confusion.
Corrected the furnace fuels. Solves #1071
Merge pull request #1077 from mc-server/fuelfixes

Corrected the furnace fuels. Solves #1071
Proper fix for long interaction.

Fixes #1078 and #1038.