Update 0.12 - Several Changes

- Added a new MonoBehaviour (Unity Component) class: StaticObjectModule which gets attached to every static object.
|-> Provides virtual methods to override for Saving & Loading Settings when KSP invokes the save or load callback.
|-> Provides a virtual method to override for cleaning up your references before script destruction.
|-> Provides a reference to the instantiated static object's properties.
- Added isYielding parameter for config files. You can manually set this to 0 to remove your object from the editor list.
- Added object scaling to the GUI and StaticObject parameters. You should use this for testing sizes out, rather than a permanent setting.
- Added the ability to rename your Launch Sites when marking them in the KT GUI.
- Added a module list which contains all non-native modules added to the static object component for reference.
- Added screen message to the vessel editors for when a Launch Site is selected (to better support the user experience of the new design).
- Added a new native component: Ladder - which allows a static object to become climbable should static objects meet the existing KSP ladder configuration.
- Added visibility range as an adjustable variable to the KT GUI.
- Added support for reading and writing settings to the current save folder. (Extensions.ReadSetting, Extensions.WriteSetting, Extensions.ReadNode, Extensions.WriteNode).
- Changed the KT GUI layout and added a few extra GUI objects.
- Changed default behaviour for remembering launch sites: If the last launch site was set to "LaunchPad" or "Runway" it will now reset to the default for the active vessel editor.
- Changed the behaviour of custom modules to be enabled only when the active vessel distance is inside the visibility range of the object.
- Changed the positioning and design of the GUI button present in the vessel editors.
- Fixed a bug which sometimes let PQSCity reference destroyed objects.
- Fixed a bug which was trying to read 'name' and 'namespace' from added modules as members of the module.
- Several other fixes and minor changes were also made.