Clarify i18n strings descriptions
This change clarifies i18n string descriptions and changes one string of
the "Add language" dialog in the options page ("OK" button --> "Add").
Change-Id: I4085085ddaa19ab9b6c8a526c1001b7c3ccb2672
diff --git a/src/options.html b/src/options.html
index ade625c..ef2efc5 100644
--- a/src/options.html
+++ b/src/options.html
@@ -42,7 +42,7 @@
</div>
<div class="action_buttons">
<button id="languages_add_cancel" data-i18n="cancel"></button>
- <button id="languages_add_ok" data-i18n="ok"></button>
+ <button id="languages_add_ok" data-i18n="addlanguage_addbutton"></button>
</div>
</dialog>
<dialog id="credits_dialog">