Add number-with-info HTML class to stats

So it can be reused in advanced statistics.

app/assets/stylesheets/stats.scss

@@ -20,16 +20,30 @@
     margin-top: $line-height;
   }
 
-  .participants {
+  .number-with-info {
     display: inline-block;
     margin-right: $line-height * 2;
-    padding-left: $line-height * 2.5;
-    position: relative;
 
-    &::before {
+    &.participants {
+      padding-left: $line-height * 2.5;
+      position: relative;
+
+      &::before {
+        left: 0;
+        position: absolute;
+      }
+    }
+
+    &.total-participants::before {
       content: image-url('stats_man.png');
-      left: 0;
+    }
-      position: absolute;
+
+    &.male::before {
+      content: image-url('stats_man.png');
+    }
+
+    &.female::before {
+      content: image-url('stats_woman.png');
     }
 
     .number {
@@ -45,17 +59,6 @@
     }
   }
 
-  .gender {
-
-    &.male::before {
-      content: image-url('stats_man.png');
-    }
-
-    &.female::before {
-      content: image-url('stats_woman.png');
-    }
-  }
-
   .progress {
     background: #ebf0f4;
     border-radius: rem-calc(20);

app/views/shared/stats/_participation.html.erb

@@ -4,7 +4,7 @@
   <div id="total_participants" class="stats-group">
     <h4><%= t("stats.total_participants") %></h4>
 
-    <p class="participants">
+    <p class="number-with-info participants total-participants">
       <span class="number"><%= stats[:total_participants] %></span>
       <span class="info"><%= t("polls.show.stats.total_votes") %></span>
     </p>
@@ -13,7 +13,7 @@
   <div id="participants_by_gender" class="stats-group">
     <h4><%= t("stats.by_gender") %></h4>
 
-    <p class="gender male participants">
+    <p class="number-with-info participants male">
       <span class="number"><%= stats[:total_male_participants] %></span>
       <span class="info">
         <%= I18n.t("stats.men_percentage",
@@ -21,7 +21,7 @@
       </span>
     </p>
 
-    <p class="gender female participants">
+    <p class="number-with-info participants female">
       <span class="number"><%= stats[:total_female_participants] %></span>
       <span class="info">
         <%= I18n.t("stats.women_percentage",