Add scheme and weaponset for Construction Mode.
move failing test into "todo" folder so that it can be excluded with ctest -E '^todo/'

--HG--
rename : tests/lua/twothousandmines.lua => tests/lua/todo/twothousandmines.lua
extra : rebase_source : 29ebfe7f9eaf235f83a58c58497de4af880aa548
Skip checkin on collision for frequently spammed gear types if collision gets huge instead of trying to delete mines.
Add testsuite