move back session-icon-button to _session.scss

stylesheets/_session.scss

@@ -440,4 +440,41 @@ $session_message-container-border-radius: 5px;
       }
     }
   }
+
+  &-icon-button {
+    fill: $session-color-white;
+    opacity: 0.4;
+    cursor: pointer;
+    display: inline-block;
+    transition: opacity $session-transition-duration;
+
+    @mixin adjust-icon-size($size) {
+      line-height: $size;
+      height: $size;
+      width: $size;
+
+      margin: $size / 3;
+
+      img {
+        height: $size;
+        width: $size;
+      }
+    }
+
+    &.small {
+      @include adjust-icon-size($session-icon-size-sm);
+    }
+
+    &.medium {
+      @include adjust-icon-size($session-icon-size-md);
+    }
+
+    &.large {
+      @include adjust-icon-size($session-icon-size-lg);
+    }
+
+    &:hover {
+      opacity: 1;
+    }
+  }
 }

stylesheets/_session_signin.scss

@@ -232,55 +232,6 @@
 
 
 
-
-
-
-.session-icon-button {
-  fill: $session-color-white;
-  opacity: 0.4;
-  cursor: pointer;
-  display: inline-block;
-  transition: opacity $session-transition-duration;
-
-  @mixin adjust-icon-size($size) {
-    line-height: $size;
-    height: $size;
-    width: $size;
-
-    margin: $size / 3;
-
-    img {
-      height: $size;
-      width: $size;
-    }
-  }
-
-  &.small {
-    @include adjust-icon-size($session-icon-size-sm);
-  }
-
-  &.medium {
-    @include adjust-icon-size($session-icon-size-md);
-  }
-
-  &.large {
-    @include adjust-icon-size($session-icon-size-lg);
-  }
-
-  &:hover {
-    opacity: 1;
-  }
-}
-
-
-
-
-
-
-
-
-
-
 [contenteditable='true']:empty::before {
   content: attr(placeholder);
   color: $session-color-light-grey;