[WIP] new client - seasonal-shop (#9018)

* extract seasonal-shop config - use summer season items (to work on)

* add suggested border to shopItems

* refactor getOfficialPinnedItems (now includes the seasonal gear)

* refactor shops.getSeasonalShop - add featured items to result - add the set to special equipment items

* feat(content): Fall 2017 seasonal gear
Also adds set keys for all prior seasonal gear.

* show item limited time (buyModal & shopItem)

* select seasonal fall sets

* WIP(seasonal-shop): placeholder Fall 2017 items

* fix lint

* sprites

* styling + fix purchase of seasonal spells

* compile sprites

* fixes: check isPinned with officialItems

* enable purchase of seasonal items for testing

* fix shop apis

* add featuredItems to market

* quest shop: add featuredItems to api

* tiem travelers shop: add featuredItems to api

* fix gear types filter

* feat(content): Fall 2017 compleat

* chore(sprites): compile

* show opened shop state (npc+background)

* add opened seasonal npc

* current seasonal users class set = purchase by gold - lock other sets of the current season

* hide event badge in seasonal shop - dot only for suggested items - cursor: pointer on shopItems

* refresh rewards column list (seasonal gear won't refresh it on purchase)

* fix duplicate seasonal gear -> remove special items from the old reward gear (which is used to reset the pinned gears)

* every current season gear is purchased by gold - prevent buyModal on locked items

* use the current event date range

* list seasonal sets by event date

* use custom method instead of updateStore to list the pinnable gear

* change daterange to 10-31

* fix start quest modal from items - disable invite quest button if a quest is already active

* toggle pin in buy-dialogs

* check if the item is not undefined/null - renamed the watch function

website/client/components/groups/startQuestModal.vue

@@ -12,7 +12,7 @@
     div(v-if='questData')
       questDialogContent(:item="questData")
     div.text-center
-      button.btn.btn-primary(@click='questInit()') {{$t('inviteToPartyOrQuest')}}
+      button.btn.btn-primary(@click='questInit()', :disabled="Boolean(group.quest)") {{$t('inviteToPartyOrQuest')}}
     div.text-center
       p {{$t('inviteInformation')}}
     .side-panel(v-if='questData')