feat(accordion): accordion title now has css variable for justificati…

…on and icon order

- this way since in volto-tabs-blocks we have icon to the right as option there we can
  modify the order of the icon to set it to the left when that option isn't activated

theme/themes/eea/modules/accordion.variables

@@ -13,7 +13,7 @@
 @titleColor: @textColorCSSVar;
 @titleBorderBottom: @1px solid @silverGray;
 @titleColorHover:var(--text-color-hover, @grey-5);
-@titleJustifyContent: space-between;
+@titleJustifyContent: var(--accordion-title-justify, space-between);
 
 /* Icon */
 @iconColor: var(--text-color, @oldSilver);
@@ -33,7 +33,7 @@
 @iconVerticalAlign: baseline;
 @iconTransform: none;
 @iconColorHover: @titleColorHover;
-@iconOrder: 1; // Icon after text of the title
+@iconOrder: var(--accordion-title-icon-order, 1); // Icon after text of the title
 @filterIconWidth: 3rem;
 @filterIconFontSize: 2rem;
 @filterIconMargin: 0 10px;