UI fixes, adds blanket impls of buy/sell signals

lootalot_front/src/App.vue

@@ -37,7 +37,7 @@
               v-show="!playerIsGroup">
               <a @click="switchView('player')">Mon coffre</a></li>
             <li :class="{'is-active': activeView == 'adding' }">
-              <a @click="switchView('adding')">
+              <a class="has-text-grey-light" @click="switchView('adding')">
                 + {{ playerIsGroup ? 'Nouveau Loot' : 'Acheter' }}
               </a>
             </li>
@@ -49,7 +49,8 @@
           <h2 v-show="playerIsGroup">ItemInput</h2>
           <Chest 
               :items="playerIsGroup ? [] : shopInventory"
-              :perms="playerIsGroup ? {} : { canBuy: true }">
+              :perms="playerIsGroup ? {} : { canBuy: true }"
+              @buy="(data) => { switchView('player'); actions.buyItems(data); }">
           </Chest>
         </template>
         <Chest v-else
@@ -58,6 +59,7 @@
                 canGrab: !(showPlayerChest || playerIsGroup), 
                 canSell: showPlayerChest || playerIsGroup
             }"
+            @sell="actions.sellItems"
             @claim="actions.putClaim"
             @unclaim="actions.withdrawClaim">
         </Chest>