Further usercard readibility. Made it visible which "tab" is actiavated - should

be enough to hint user that you can click "following" / "followers". Fixes #77

src/components/user_card_content/user_card_content.js

@@ -2,7 +2,7 @@ import StillImage from '../still-image/still-image.vue'
 import { hex2rgb } from '../../services/color_convert/color_convert.js'
 
 export default {
-  props: [ 'user', 'switcher', 'hideBio' ],
+  props: [ 'user', 'switcher', 'selected', 'hideBio' ],
   computed: {
     headingStyle () {
       const color = this.$store.state.config.colors.bg