Content in the «Edit link» form

Preconditions:
1. Create ADMIN-user for “JCommune” and log in.
2. Create one external link in header on “JCommune” pages.
3. Chose one of the proposed languages in the language menu as a page language.
4. Open “Edit link” form in “External link editor” window by pressing "Edit" button for the created link.

There are next attributes in the “Edit link” window as a expected result:
for Ukrainian language:

• Window Title: “Редактор зовнішніх посилань”;
• Text Fields: "Назва", "Вкажiть посилання", "Підказка";
• Buttons: Зберегти, Скасувати, X.

for Russian language:

• Window Title: “Редактор внешних ссылок”;
• Text Fields: "Название", "Укажите ссылку", "Подсказка";
• Buttons: Сохранить, Отмена, X.

for English language:

• Window Title: “External link editor”;
• Text Fields: "Title", "Specify a link", "Hint";
• Buttons: Save, Cancel, X.