Close card button now visible on mobile.

Closes #2261

client/components/cards/cardDetails.jade

@@ -4,9 +4,14 @@ template(name="cardDetails")
       +inlinedForm(classNames="js-card-details-title")
         +editCardTitleForm
       else
-        a.fa.fa-times-thin.close-card-details.js-close-card-details
-        if currentUser.isBoardMember
-          a.fa.fa-navicon.card-details-menu.js-open-card-details-menu
+        unless isMiniScreen
+          a.fa.fa-times-thin.close-card-details.js-close-card-details
+          if currentUser.isBoardMember
+            a.fa.fa-navicon.card-details-menu.js-open-card-details-menu
+        if isMiniScreen
+          a.fa.fa-times-thin.close-card-details-mobile-web.js-close-card-details
+          if currentUser.isBoardMember
+            a.fa.fa-navicon.card-details-menu-mobile-web.js-open-card-details-menu
         h2.card-details-title.js-card-title(
           class="{{#if canModifyCard}}js-open-inlined-form is-editable{{/if}}")
             +viewer

client/components/cards/cardDetails.styl

@@ -107,7 +107,9 @@ avatar-radius = 50%
     border-bottom: 1px solid darken(white, 14%)
 
     .close-card-details,
-    .card-details-menu
+    .card-details-menu,
+    .close-card-details-mobile-web,
+    .card-details-menu-mobile-web
       float: right
 
     .close-card-details
@@ -115,10 +117,20 @@ avatar-radius = 50%
       padding: 5px
       margin-right: -8px
 
+    .close-card-details-mobile-web
+      font-size: 24px
+      padding: 5px
+      margin-right: 40px
+
     .card-details-menu
       font-size: 17px
       padding: 10px
 
+    .card-details-menu-mobile-web
+      font-size: 17px
+      padding: 10px
+      margin-right: 30px
+
     .card-details-watch
       font-size: 17px
       padding-left: 7px