add SLA property validation in the property grid
add validation template
add type converter validation validation to time increase
switch to fluent validation
update commands using the hierarchy picker to use a consistent order for master and children
new view models and validation
Changed the validation display error messages for the dialogs and Endpoint SLA.
Fixed the typo in the error message.
Merge branch 'issue-327-additional-validation' into develop

Conflicts:
	src/ServiceMatrix/ToolkitConstants.cs
	src/ServiceMatrix/source.extension.gen.ttinclude
	src/Studio.slnbldr