Removed two unused variables.
Get sets.xml directly from github.
Fixed spoiler list parsing, oracle works again.
Merge branch 'oracle-fixes'
Merge branch 'documentation'
Merge branch 'documentation'
Updated COPYING (GPLv2) with GPLv2 from GNU.org (trivial)
Installer shows GPL, appends git hash, uses solid lzma now.
Updated usermanual to installer changes.