Fix strings to be translate

client/components/sidebar/sidebar.jade

@@ -146,13 +146,13 @@ template(name="boardInfoOnMyBoardsPopup")
         .materialCheckBox(class="{{#if allowsCardCounterList}}is-checked{{/if}}")
         span
           i.fa.fa-sign-out
-          | {{_ 'Show card counter per list'}}
+          | {{_ 'show-card-counter-per-list'}}
     div.check-div
       a.flex.js-field-has-boardmemberlist(class="{{#if allowsBoardMember}}is-checked{{/if}}")
         .materialCheckBox(class="{{#if allowsBoardMember}}is-checked{{/if}}")
         span
           i.fa.fa-hourglass-start
-          | {{_ 'Show Board member avatars'}}
+          | {{_ 'show-board_members-avatar'}}
 
 template(name="boardCardSettingsPopup")
   form.board-card-settings

i18n/en.i18n.json

@@ -136,6 +136,8 @@
   "back": "Back",
   "board-change-color": "Change color",
   "board-info-on-my-boards" : "Board info on My Boards",
+  "show-card-counter-per-list": "Show card counter per list",
+  "show-board_members-avatar": "Show Board members avatars",
   "board-nb-stars": "%s stars",
   "board-not-found": "Board not found",
   "board-private-info": "This board will be <strong>private</strong>.",