adds icon if already answer poll

app/assets/stylesheets/participation.scss

@@ -1382,6 +1382,7 @@ ul.ballot-list {
     &.can-answer:after,
     &.cant-answer:after,
     &.not-logged-in:after,
+    &.already-answer:after,
     &.unverified:after {
       font-family: "icons" !important;
       left: 34px;
@@ -1390,20 +1391,20 @@ ul.ballot-list {
     }
 
     &.can-answer {
-      border-right: 60px solid $success-bg;
+      border-right: 60px solid $info-bg;
 
       &:after {
-        color: $color-success;
-        content: "\59";
+        color: $color-info;
+        content: "\6c";
       }
     }
 
     &.cant-answer {
-      border-right: 60px solid $warning-bg;
+      border-right: 60px solid $alert-bg;
 
       &:after {
-        color: $color-warning;
-        content: "\76";
+        color: $color-alert;
+        content: "\74";
       }
     }
 
@@ -1424,6 +1425,15 @@ ul.ballot-list {
         content: "\6f";
       }
     }
+
+    &.already-answer {
+      border-right: 60px solid $success-bg;
+
+      &:after {
+        color: $color-success;
+        content: "\59";
+      }
+    }
   }
 
   .dates {