Improved Ukrainian translation

[WebVPF]

No description provided.

[what-the-diff]

• Додано стрілку "Надіслати email для зміни пароля"
• Added a confirmation message for the password reset action
• Added success notification after sending an email to user with instructions on how to change his/her password
• Fixed typo in validation messages (added missing apostrophe) and added new translation strings: 'after_or_equal', 'before_or_equal', 'date_equals' and others; also fixed some typos in existing translations, e.g.: changed "выберите" into "виберіть", etc.; removed unused string from lang file ('manual')
• Changed text of button that sends emails about changing passwords from English ("Send") into Ukrainian ("Вiдпрaвить"). Also updated other buttons texts where needed (e..g., replaced all instances of word Cancel with its Ukrainian equivalent - Skasuvati). Updated labels as well, e..g., instead of label Password Reset Email we now have label E-mail dlya zminy parolya which is more readable for non-English speakers who use this CMS software interface in their native language(s).