[WIP] shops + market gear api (#8980)

* lock other classes gear

* fix avatar in equip-gear-modal

* fix seasonal shop

* seasonal : new gear type order

* fix pin gear (and get new gear on buying)

* API: /shops/market-gear  - refactoring pinnedGearUtils - move _isPinned to common/libs

* use shops.getMarketGearCategories to list the marketGear

* use shops.getMarketCategories instead of API-call

* mark gear reward items as locked

* purchase time-travelers stuff + update view + use method instead of http-api + add missing mammoth shop image

* Time Travelers Shop: open/closed state

* time travelers: show gear preview + hide sidebar if closed

* update resized images

* fix lint

website/client/components/creatorIntro.vue

@@ -562,7 +562,7 @@ import hairIcon from 'assets/svg/hair.svg';
 import backgroundsIcon from 'assets/svg/backgrounds.svg';
 import gem from 'assets/svg/gem.svg';
 import pin from 'assets/svg/pin.svg';
-import _isPinned from './shops/_isPinned';
+import { isPinned } from 'common/script/ops/pinnedGearUtils';
 
 
 export default {
@@ -744,7 +744,7 @@ export default {
       return backgroundClass;
     },
     isBackgroundPinned (bg) {
-      return _isPinned(this.user, bg);
+      return isPinned(this.user, bg);
     },
     togglePinned (bg) {
       if (!this.$store.dispatch('user:togglePinnedItem', {type: bg.pinType, path: bg.path})) {