Some drag handle fixes.

Thanks to xet7 !

Related #2081

client/components/swimlanes/swimlaneHeader.jade

@@ -16,8 +16,11 @@ template(name="swimlaneFixedHeader")
     unless currentUser.isCommentOnly
       a.fa.fa-plus.js-open-add-swimlane-menu.swimlane-header-plus-icon
       a.fa.fa-navicon.js-open-swimlane-menu
-      if showDesktopDragHandles
-        a.swimlane-header-menu-handle.handle.fa.fa-arrows.js-swimlane-header-handle
+      unless isMiniScreen
+        if showDesktopDragHandles
+          a.swimlane-header-handle.handle.fa.fa-arrows.js-swimlane-header-handle
+      if isMiniScreen
+        a.swimlane-header-miniscreen-handle.handle.fa.fa-arrows.js-swimlane-header-handle
 
 template(name="editSwimlaneTitleForm")
   .list-composer

client/components/swimlanes/swimlanes.styl

@@ -50,7 +50,7 @@
       margin-left: 5px
       margin-right: 10px
 
-    .swimlane-header-menu-handle
+    .swimlane-header-handle
       position: absolute
       padding: 7px
       top: 50%
@@ -58,6 +58,14 @@
       left: 300px
       font-size: 18px
 
+    .swimlane-header-miniscreen-handle
+      position: absolute
+      padding: 7px
+      top: 50%
+      transform: translateY(-50%)
+      left: 87vw
+      font-size: 24px
+
 .list-group
   height: 100%