Fix unit tests by removing static ID naming

Signed-off-by: James Tasker <james_tasker1@hotmail.com>
Add basic image meter

Signed-off-by: James Tasker <james_tasker1@hotmail.com>
Add ImageName property to image meter

Signed-off-by: James Tasker <james_tasker1@hotmail.com>
Add basic skin config

 - [Rainmeter] section
 - update property
Add collection of meters to Skin

Signed-off-by: James Tasker <james_tasker1@hotmail.com>