add a quick css hack to make choose file... clickable labels look like buttons

themes/night.less

@@ -178,6 +178,15 @@ body.flat.ttrss_main {
 		color : @fg-light;
 	}
 
+	label.dijitButton {
+		border: 1px solid @border-main;
+	}
+
+	label.dijitButton:hover {
+		border-color : lighten(@border-dark, 5%);
+		background-color: @bg-main;
+	}
+
 	textarea {
 		color : @fg-light;
 	}