138-add success/fail message after saving group.

add success/fail message after saving group.
96 - PV - Account page

Adjust the layout and added the success message after updating.
112 - Users edit log error

Fixed the edit unit user saving error.
Enable the email in ImportMnagerImpl

Recoveried the code that disabled by me.
Merge pull request #59 from richardli5945/develop

Bug fixing.