move fixed test case out of 'todo'

--HG--
rename : tests/lua/todo/twothousandmines.lua => tests/lua/twothousandmines.lua
new implementation for Lua API DismissTeam. all hedgehogs of the team are now removed without using teamgone
Added TechRacer (still needs a lot of love), updated changelog
finnish translation fixes
Add testsuite
Verbose tests