settings: add CGUIDialogSettingsManualBase
fix CSettingList constructor
settings: add ISettingContorl::SetDelayed()
fix settings base
DatabaseQuery: move value separator define to header
[confluence] adjust DialogMediaFilter.xml
settings: allow to pass custom data to the setting options filler implementations
settings: use CSetting::CheckValidity() instead of CSetting::FromString() for input validation
adjust CGUIDialogMediaFilter to derive from CGUIDialogSettingsManualBase
settings: add indicator for invalid input
fix SettingUtils
settings: fix CSettingNumber::fromString()
settings: provide functionality to update the displayed value of the setting's control without changing the setting's value