Creating a property editor in Umbraco 7

Questions
1

Since this is the first time I'm working with Umbraco 7, I have a few questions about property editors. (Using the latest nightly 7.0.0 build 158)

  1. How do i choose the dbType my property should be saved as? It should be saved as NText instead of NVarchar
  2. How do i select custom mediatypes and folders with the MediaPicker? (dialogService.mediaPicker)
  3. How do i hide the label? I've tried two different methods in my package.manifest, but none of them works
{
	propertyEditors:[
		{
			name:"XXX Editor",
			alias:"XXX.Editor",
			hideLabel: true,
			
			editor:{
				view:"~/App_Plugins/xxx.Editor/Editor.html",
				valueType: "JSON"
			},

		prevalues:{
			fields:[
				{
					label:"Preview",
					description:"Display a live preview",
					key:"preview",
					view:"boolean"
				},
				{
					label:"Default value",
					description:"If value is blank, the editor will show this",
					key:"defaultValue",
					view:"textarea"
				},



					{

label: “Hide label”,

description: “”,

key: “hideLabel”,

view: “boolean”

}

				]

}

}

],

javascript:[

“~/App_Plugins/xxx.Editor/Editor.controller.js”

]

}

This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/46183-creating-a-property-editor-in-umbraco-7