Improved default values for various global settings

Ignore-this: bd5dfe9757d689c1a89f7e2a611859ce

darcs-hash:20100929130824-58252-262f29180c8410391c6abd6d31d8c941baed3bc2
Removed unused class

Ignore-this: 5cfb92ddb4ccb86eaaffb604da06c18

darcs-hash:20101006072646-56b4d-9460a0ec66ff4c8a16ea9f240e836f8fe908e2d6