Major change: Documentation is now included with mesecons, the website just extracts the documentation in a more readable format

This makes development of new features easier, as documentation can automatically be updated on the website without modifying the website's code!
Every mod that has nodes in the mesecons modpack has a "doc" folder that contains subfolders with recipe, description and preview of the block. The website will discover which documentation is available
by reading the documentation.json file.

mesecons_gates/doc/xor/description.html

@@ -0,0 +1 @@
+XOR gates power their output if only one input is powered, they're off if either both or none of the inputs is powered.