Added Steam Achievements, cause I guess they're kewl alright.
- Steam Achievements.
- Fix you can always save at Places even if you have 'Allow manual save' set to 'AT SELECTED SITES' or 'AT ALL SITES'.
- Fix can't save at Junctions regardless of 'Allow manual save' setting.
- Fix Fares show wrong Surcharges depending on where you view them (e.g. on the pickup panel or on the fare context-panel). (Thanks to Luke).
- Fix buying out cab dialog still mentions 'fuel'. (Thanks to Atova, Brain, Luke...everybody).
Enjoy!