[phase2]I18n text in index view

app/views/glossary_terms/index.html.erb

@@ -1,10 +1,10 @@
-<h2>GlossaryTermsController#index</h2>
+<h2><%=t :label_glossary_terms %></h2>
 
 <table class="list">
   <thead>
     <tr>
-      <th>name</th>
-      <th>description</th>
+      <th><%=t :field_name %></th>
+      <th><%=l :field_description %></th>
     </tr>
   </thead>
   <tbody>

config/locales/en.yml

@@ -1,3 +1,4 @@
 # English strings go here for Rails i18n
 en:
-  # my_label: "My label"
+  label_glossary_terms: "Glossary terms"
+  

config/locales/ja.yml

@@ -0,0 +1,3 @@
+ja:
+  label_glossary_terms: "用語集"
+