Please upgrade to 2.3 here.
The 2.2 and earlier branches are no longer being updated.
I have copied the default theme and made a new theme called test. I have copied the stylesheet over, the images, etc and have activated my theme. I have made a views folder and copied the default.view.php over to it.
Editing the CSS, works. But, editing default.view.php in themes/test/views, does not show any effect on the page.