Long overdue addition of information to docs

  * Add 2 FAQ entries, one concerning mod blocks, the other
    about the maps API.

  * Add note about The End and lighting strength. (Closes #1111)
    (Also, nice quads.)
config.rst restructuring with new headings

This hopefully makes the page slightly less intimidating.
Update front page of the docs

lol
Minor fixes to documentation

  * Fix the copypasted section in the README

  * Update version and dates
Merge pull request #1113 from CounterPillow/docs-cleanup

Docs cleanup