Add sparkle's name to Rope Knock Challenge
Reason: For being the first known player to finish ClimbHome.
String freeze is preserved, the hog names are not localized.
Lua scripts for engine testing. These scripts are the same as other Lua scripts
in Hedgewars, but you ought to call `EndLuaTest(TEST_SUCCESSFUL)` or
`EndLuaTest(TEST_FAILED)` when the test is completed.