addresses  #111

The 0-width border in this theme prevented the red error border from showing. This commit returns a 1px solid border with the same CSS selector as PVE's built-in theme and corrects for the corresponding layout disruption by adding a -1px margin. The built-in theme currently sets the border color to #cf4c35, which is not overridden.

* 7.0: Fix left-panel DC view context menu
* 7.0: Remove chart button borders
* 7.0: Fix change button focus color
* 7.0: Color icons
* 7.0: Fix grid group title color for repo page
* 7.0: Checkbox: Inherit color
* 7.0 changes compiled
* Add 7.0 to supported list