Add dummy active-theme.css file

Kristan Kenney · Kristan Kenney · commit ced33e745be3 · 2020-07-05T21:39:09.000-03:00
Prevents error when loading when theme has not been previously changed.
diff --git a/web/css/active-theme.css b/web/css/active-theme.css
@@ -0,0 +1 @@
+/* Theme override file -- will be replaced when theme is changed from default. */

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+/* Theme override file -- will be replaced when theme is changed from default. */`