Merge pull request #3312 from helioguardabaxo/master

Fix Modern theme board canvas background

client/components/boards/boardColors.styl

@@ -602,9 +602,12 @@ setBoardClear(color1,color2)
     height: 21px
     background: #f7f7f7
 
+  .board-canvas
+    background: #f5f5f5
+
   /* Swimlane */
   .swimlane
-    background: #f5f5f5
+    background: none
 
   .swimlane .swimlane-header-wrap .swimlane-header
     font-family: Poppins