Removed translation section.

Also merged troubleshooting and contributing sections. Translation info
has moved to LOOT's wiki.
Wrote out changelog so far.
Removed pointless note.

Multiple copies of all games edit their shared plugins.txt, just not to
set the load order.
Deleted some images that won't be replaced.
Added CONTRIBUTING.md
Updated README.md

Removed translation section, added snapshot builds section.
Documented archive script features.
Updated settings section of readme.
Updated editor section of readme.

Also added icons to description when talking about them.