Add Features: limit the board list to 2 or 1 for mobile clients

client/components/boards/boardsList.styl

@@ -183,10 +183,11 @@ $spaceBetweenTiles = 16px
     overflow: scroll
 
     li
-      width: 33.3%
+      width: 50% 
 
     .board-list-item
       overflow: hidden
+      height: 8rem
 
     .board-list-item-sub-name
       position: relative
@@ -195,4 +196,4 @@ $spaceBetweenTiles = 16px
 
 @media screen and (max-width: 360px)
     li
-      width: 50%
+      width: 100%