Clean-up of options in init.txt and crawl_options.txt

courtesy of maiermirk (1829976, 1831190).

This includes a lot of spacing changes, updates of some examples and moving around some options into more sensible groupings.

Highlights:

  • add returning weapons to fire_order list and allow fire_order to use += on new lines (This should solve the second part of 1829475.)
  • heap_brand now defaults to "reverse"
  • detected_item_colour defaults to green

Also s/artifact/artefact.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@2874 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on November 19, 2007
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