CGUIControlButtonSetting: fix duplicate variable in Update()
settings: add methods to manually put together setting sections, categories and groups
settings: fix conflict of <minimum> and <maximum> for CSettingList
settings: add range slider control
settings: integrate range slider control into GUI
json-rpc: add new settings slider and range control
[skin.confluence] add slider control to SettingsCategory.xml
[win32] update VS project files