Doc updates

Updates to ModularInputs
Restore copyright string to VS auto generated version
Merge remote-tracking branch 'origin/feature/MIdocspass' into feature/ModularInputs

Conflicts:
	SplunkSDK/ModularInputs/Argument.cs
	SplunkSDK/ModularInputs/ConfigurationItemBase.cs
	SplunkSDK/ModularInputs/EventElement.cs
	SplunkSDK/ModularInputs/EventStreamWriter.cs
	SplunkSDK/ModularInputs/InputConfiguration.cs
	SplunkSDK/ModularInputs/InputDefinitionBase.cs
	SplunkSDK/ModularInputs/Scheme.cs
	SplunkSDK/ModularInputs/Script.cs
	SplunkSDK/ModularInputs/SystemLogger.cs
	SplunkSDK/ModularInputs/ValidationItems.cs